If you want your mother to carry it outside the home while driving, the thread below has some relevance.
https://www.tractorbynet.com/forums...perience-life-alert.html?highlight=life+alert
That said, my father had the unit for two years, and in those two years, we both really weren't happy with it. The company never followed up with me like they said they would per notifications and for whatever reasons, and being that it was a AT&T cell carrier, the one place where it had the most spotty signal was at my dads house. The final straw was when my dad lost the pocket transmitter, and the company (Alert 1) was going to bill me another $500 for a new unit. We went back and forth on that bill and it wasn't until I wrote an online view of it, and literally within an hour, they called me and told me that if I was less harsh in my review, they would give me a full refund (after talking with three different customer service reps and a supervisor to get my money back and still STAY on the service, they still told me to pound sand which I really didn't appreciate). I also found it funny that they called me like an hour after the review was posted. My dad had a long talk with me and I gave him credit for using one for 2 years, but wasn't going to push it after that, so he never got a newer one, even from a different company.
Last year at 86, dad fractured his back trying to lift his lawn mower up with a 2x6 trying to change a tire. I ended up driving up to Pa as he needed minor surgery, and he's been living with us ever since. Luckily he wasn't incapacitate out in the detached garage about 100' away from the house, and he didn't even know it was facturerd until his 2nd doctors visit and they did x-rays.
I can tell you from experience, at least with my father, we've been going to the VA here in NC for the last 4 months, and our next visit with the doctor I'm going to get a referal to a good neuro surgeon to look at his back (same one who did mine). My dad was VERY active up until he hurt his back (golfing 18 holes 2-3 time week, fishing...), and it may just be old age, but your body takes a "hit" like that and I can't believe how much my dad has slowed down. I talked to a friend in NC and he told me the same thing (when I told him I'd be gone a couple weeks to go up for my dad) happened to his dad (fractured back) when he was in his late 70's, and he died a half year later never seeming to recoup from the injury. Wasn't trying to scare me, just to ensure I really look out for him after that. At this point, I'm not certain what is due to old age and what is due to still another possible issue (I'm amazed that the VA hasn't requested the MRI nor are they asking for one). The physical therapist was even befuddled by the pain my dad still gets sometimes.
Point above is even though you're planning for a medical emergency, have a plan in place AFTER the medical emergency so if she does slow down, you and your siblings know where she's going to stay and who can look after her just in case. I never thought my father would agree to live with us, but after having a friend check in on him after his back problem and he found him crying on the sofa in pain, my dad at least came to realization that he's at a point in his life where he may need help from time to time. We bought the house in 2004 as a single couple with a fully furnished basement just so my dad could move in (mom had passed in 2002). Took him 14 years to decide it was time and as of last year, never thought I'd see it LOL
He had finally decided to sell the house next spring and he'll be with us now till his end. For that, I'm grateful.
Whatever you decide, good luck with your choice.
In the grand scheme of things in life, I can't think of anything else as important than raising kids who actually care about you as an adult. Right now, my one 14 year boy would really like to move out of the house and get as far away from me as possible LOL