Just curious, did you take one of the SS coaching seminars and teach her using what you learned there?
I have seen many trainers having geezers doing physical therapy type exercises -- not that there's anything wrong with that BUT you would expect to see at least a handful of people branching out to squats, bench, deads, etc. after a while. Especially detrained older women who don't walk into the gym with orthopedic issues stemming from testosterone-fueled stupidity in their youth.
Keep us updated! I'll throw in a pretty please for some case studies. Over the next few years I'm hoping to do a FdSc, get my PT cert and become an SS coach. Older people are definitely one of the groups I want to work with.