Lower back and hip pain of women between 65-70 years old

I need someone to please give me a hand. I am a fulltime student and I live in a different state than that of my mom. My mother's back and hip has been bothering her to the point that she is can only walk bent over since she says it hurts so much when she tries to stand straight up. I continue to fly home so that I can help her find someone who we think can help her. She's been like this for the pass 2-3 years and it is not improving. We've switched physicians a couple of times. One doctor has finally prescribed her a pain releiver but she says some times it works and sometimes it doesn't. I had practiced with her giving her several stretching exercising to do each morning. I was hoping they would help since a physical therapist had given them to my husband for his degenerate scholiosis. But my sister who keeps me up to date with everything since I live in another state and my sister is only a couple of miles away she says my mother has been crying because she is so tired of being bent over with a cane and in pain. :'(

Worried Daughter,
teefoster