Can you "force" someone into assisted living?

If you have POA for health you certainly can contact her doctors.
It's common for someone to "pass" with a doctor. They often want to impress the doctor and appear at their best. Also, most people fear change, and they don't want the doctor to suggest change, so they "ac"t their way through an appointment.
Recording her calls is a good idea. You could try assisted living if she isn't too disabled. She could be very lonely and afraid even though she may not even realize it. Once she is around people, her panic may end.
Otherwise, please look into nursing homes. I don't know where you live, but in many parts of the country, nursing homes have made great strides forward and are really very good.
I can't emphasis enough the value of socialization for elders. Isolation can contribute to all kinds of problems, and even the best care from adult children and grandchildren can't replace the feeling of living in a safe environment. She may complain about moving to a facility at first, but I expect she'll eventually learn to like the companionship and the feeling of safety. Please look into a move for her.
Carol

This is a long answer, but I hope our experience might help.
We went through the same with our mother. We kept telling the doctor she was mentally unable to remain in independent living and for two years she kept saying "she isn't there yet". Finally I wrote down all the behaviors she was doing or not able to do, and gave it to the nurse before the visit. The doctor finally "got it" and gave her a "mental" test, asking her questions etc. Then she put on the form for IL that she had alzheimers. They told us she had to move, so at that point she had no choice but to move, and we moved her into AL - we didn't tell her where she was going - just took her to my sister's house for a visit for two days while we moved her stuff to AL. Then we sat down with her and explained the situation. The AL was fore-warned she would be upset, so they were prepared and also we gave her 1/2 valium to reduce her stress level.
If you don't have a POA, its important to get a doctor to evaluate her so you have the doctor on your side - and if need be, go to court to get a guardianship. It will take full family cooperation.
However, if your grandmother can barely walk, she might not be eligible for assisted living unless she has an aide (which you will have to pay for) The key is how much assistance they actually need. Also, AL does not have the legal authority to make the resident "do anything".
Mom finally fell too many times, can't walk alone now, so she is in a nursing home. They do everything for her.

What I was told by an elder law attorney here in California is that if you have a DPOA or a POA that allows you to make medical and financial decisions for your parent, is that you can place them in an AL or NH. However, if your parent tries to leave and the facility you have them in is not willing to talk your parent down to soothe their fears, concerns...and they want more legal back up to keep them there...then you will have to get a conservatorship/guardianship. I wish you luck and hope all works out for you!!!

Hello, I'm going through the same thing except she can't handle her finances , urinates on the floor not on purpose but yet refuses to wear depends! it's sad because she is very difficult to deal with that family has turned their back on her and she to plays the part that everything is okay in front of the doctor! I feel bad I don't know what to do my hands are tied. I live in the state of California and she has an HMO that seems like they don't care either ?

I have a situation where my step mother is 10 years senior to my father who by the way has beginning stages of Alzheimer's she has heart issues and falls all of the time. Their doctor wants to put them into assisted living but my father is still functionable. I don't feel he needs that yet. And she does not tell me what is going on health wise completely. I am not crazy about their doctor. So, I am at a disadvantage since I am their caregiver,

Missyme, assisted living is not always for people who need a lot of help. If you are acting as a caregiver, it sounds like your father and his wife are candidates for AL. If you can get them into assisted living now, you will be wise to do so. For one thing, AL is wonderful because it provides companionship, activities, etc that they need, especially since your father will eventually need memory care. If they are in AL, the transition will be easier for him. Often memory care is attached to AL, and residents in AL are given priority for open bed in memory care. That would leave your stepmother already situated and with people she knows when your Dad has to be moved. The AL where my mother lived had a memory care in the same building. The caregivers brought many of those residents to meals with everyone else.