Usually fridges and stoves are not required. They are an amenity that most LLs include to make the unit more appealing. It is standard for most LLs to provide these now in apartments and condo, although many people in SFH have their own. You must provide proper plumbing and sewage facilities, access to all necessary services or utilities, & proper working electric and heat. You must provide at least one working phone jack. You need to meet code in most places by having lights in each room and outlets. You need smoke detectors and GFCI's in the bath & kitchen if newly remodeled or new construction. You should have a CO detector if you have gas in the unit for safety reasons, but it is not required everywhere. The fire extinguisher is not yours. Let her know it doen't belong to you and must have been left by the last tenant. Tell her she is free to recharge it and use it if needed. Fire extinguishers are not required in most places. (Although it couldn't hurt to have one in the unit.)
I found this under Nevada law: NRS 118A.290 Habitability of dwelling unit.
1. The landlord shall at all times during the tenancy maintain the dwelling unit in a habitable condition. A dwelling unit is not habitable if it violates provisions of housing or health codes concerning the health, safety, sanitation or fitness for habitation of the dwelling unit or if it substantially lacks:
(a) Effective waterproofing and weather protection of the roof and exterior walls, including windows and doors.
(b) Plumbing facilities which conformed to applicable law when installed and which are maintained in good working order.
(c) A water supply approved under applicable law, which is:
(1) Under the control of the tenant or landlord and is capable of producing hot and cold running water;
(2) Furnished to appropriate fixtures; and
(3) Connected to a sewage disposal system approved under applicable law and maintained in good working order to the extent that the system can be controlled by the landlord.
(d) Adequate heating facilities which conformed to applicable law when installed and are maintained in good working order.
(e) Electrical lighting, outlets, wiring and electrical equipment which conformed to applicable law when installed and are maintained in good working order.
(f) An adequate number of appropriate receptacles for garbage and rubbish in clean condition and good repair at the commencement of the tenancy. The landlord shall arrange for the removal of garbage and rubbish from the premises unless the parties by written agreement provide otherwise.
(g) Building, grounds, appurtenances and all other areas under the landlord’s control at the time of the commencement of the tenancy in every part clean, sanitary and reasonably free from all accumulations of debris, filth, rubbish, garbage, rodents, insects and vermin.
(h) Floors, walls, ceilings, stairways and railings maintained in good repair.
(i) Ventilating, air-conditioning and other facilities and appliances, including elevators, maintained in good repair if supplied or required to be supplied by the landlord.
2. The landlord and tenant may agree that the tenant is to perform specified repairs, maintenance tasks and minor remodeling only if:
(a) The agreement of the parties is entered into in good faith; and
(b) The agreement does not diminish the obligations of the landlord to other tenants in the premises.
3. An agreement pursuant to subsection 2 is not entered into in good faith if the landlord has a duty under subsection 1 to perform the specified repairs, maintenance tasks or minor remodeling and the tenant enters into the agreement because the landlord or his agent has refused to perform them.
(Added to NRS by 1977, 1336; A 1999, 1229; 2007, 1284)
What kinds of things is she requiesting? Beyond these any any applicable state or local building code requirements, there is little else you must do. Of course, you must make necessary repairs. But other items don't need to be done. Tell the tenant it is your policy that all repair requests be placed in writing and sent to you unless it is an emergency (fire, flood, electric sparks, or structural problems). All others have to be put in writing. If she calls for something, let the machine pick up. If she wants work done, call in a day or so just to remind her it has to be in writing (for record keeping purposes).
Once you get the request, it fals into one of 3 categories. 1) Emergency or urgent - you begin repairs within 48 hours. 2) Needed or necessary repairs - you schedule work within 30 days. Or 3) Unneeded or cosmetic repairs - You deny this request. Once you figure out which it is, you send a notice to the tenant saying something like "Per your request dated xx/xx/xx, the work you have requested is (then mark 1, 2, or 3 above). Then you state when the work will be done or say "Sorry, but I must deny this request as this work is not necessary to the habitability or use of your unit." Not all work requests must be honored. If the request is for an upgrade, a cosmetic issue, or an aesthetic issue, you simply don't do this work while the unit is occupied. You wait until it is empty.
Some examples of each type of request:
1) emergency - stopped up toilet (only one bathroom), tub, or kitchen sink, fire, broken pipe, flood of unit, emergency structural (tree fell on house, storm blew off roof), sparks from outlets or electrical appliance, non-funcional stove (not the loss of one burner - but the oven, or all the burners) or fridge, loss of heat in winter, large roof leaks, break in to unit, door lock is non-functional, no hot water, broken window (open to elements)etc.
2) needed - repair of stopped up toilet (when more than one bath), bath sink, one non-functioning burner on stove, very small roof leak, one non-functional outlet (no sparks, just doesn't work), sticky or loose door lock, thermostat or furnace needs adjusted (but still produces heat), less than desirable amount of hot water, washer or dryer (yours) non-functional, small leak in unfinished basement, A/C repair in heat of summer, etc.
3) Unneeded - new paint, new carpet, repair to hole in wall (not present before occupancy), new handles (providing they still work), install A/C (if they rented unit without it) repair screen (some areas can require these, but if they were already present, you don't have to repair them until they vacate), install more than required number of smoke detectors, install doorbell, new deck, stain deck, side house, replace unbroken windows (more energy effficient ones wanted), etc.