A missed haircut is easy to shrug off on the phone. Over a few months, a skipped trim and untended nails can become a pattern you only notice when you are standing in her kitchen. Treat the appointment as a small job with an owner, not a favor that depends on memory.
Local option: New Plan Care gives families in the St. Louis area in-home help so a parent can stay home: companionship, help with bathing and dressing, meals, and overnight care. Call (314) 405-0887.
What you can do on a visit
A trim or a nail file is a task you can do yourself if she is comfortable with it and the room is set up for it. Pick a good light, a chair with a back, a towel for her shoulders, and a mirror she can see from where she sits. Keep the task short. If she gets tired or wants to stop, stop. A finished job matters less than a calm one.
What a mobile stylist changes
A mobile stylist comes to the house with their own tools and sets up in a room you choose. That removes the drive, the waiting room, and the need for her to stand or walk through a salon. Ask whether they are insured, whether they bring their own equipment, whether they clean their tools between clients, and what they do if she is tired or unsteady on the day. Ask how they handle rescheduling, because a missed slot is the thing that starts the slide.
Compare the two honestly
List the tasks she needs, such as a trim, a shave, or nails, and mark which ones you can do well on your visits and which ones need a steady hand and proper tools. The jobs you do yourself need a calendar slot on your trip. The jobs a stylist does need a standing appointment on theirs, and someone in St. Louis who can confirm it and let you know if it falls through.
Tonight
Search for mobile stylists who visit homes in her area and call two of them. Ask the questions above and write down the answers. If you will be visiting soon, put the haircut on your own visit list. If you will not, ask a neighbor or a local helper whether they would sit with her during a standing appointment.
What to leave with the doctor
Ask the doctor whether balance, dizziness, or hand strength is affecting how safely she can sit at a sink or hold still in a chair. Ask whether she should have someone close by during a haircut, and whether any position or time of day works better for her. Bring the answer back to the stylist or to whoever will be in the room.