I got her a cane today. Hopefully she will use it for balance. She feels pretty comfortable when she can touch things, but there are places, like in the kitchen this morning, where she needs to stop and sit. She still won't use the walker, but tomorrow I will pick up the wheeled one from the friend who loaned it to us for my Dad.
(Not an endorsement)
A possible assist for stairs other than a stair lift chair:
http://assistedlivingtoday.com/2012/10/portable-ez-step-review/