Just a word of caution -- keep notice of how long she is on Aridia and keep up your research. From reading many messages it appears that Aridia can be given in various ways, ie: monthly, bi-monthly, or 4 times per year. I've decided to go off of it because I was on it monthly for almost 2 years and the jaw problems seem to occur in people who have been on it for a long time.
It obviously does work, but keep track and monitor it. Make sure that you always tell your dentist that you are taking it before he does any work, especially extractions!
Good luck to your mom!! Best wishes, Cath