Thanks Windyshores.
That's what I also read about Fosamax, but neglected to think of moving beyond her pcp to an endocrinologist for input rather than relying on my newly found info. We'll ask the pcp for a referral.
She does count on her balance, and it's kept her safe so far. Her dental issues were pretty major in the past. I now wonder if the difficulties may have had something to do with the drug. Gratefully she now seems stable. Holistically she's pretty well covered. She has a good diet, albeit somewhat of a sweet tooth, and we've added a variety of supplements, enough to make her a little crazy. She's not much of a walker, but uses stairs all day and exercises in the morning.
Thanks for your response! I've benefited so much from you and others on this forum.