Not so much an AIBU, more posting here for traffic. Mods, feel free to move if you see fit!
My mum has no friends and I do mean that quite literally. Her mum and her three daughters (myself included) are her complete social circle. She works part time with 3 colleagues but never see's them outside of work as they all have school age kids to get home to, whereas my mum is late 50's and we've all flown the nest. Her husband works nights and they pass like ships in the night, only really seeing each other on a Sunday 
My mum has dedicated her life to her family and, whilst we love her dearly for it and wish to spend all the time in the world with her, it's consumed her. I want to find her some friends so she can go out, have a laugh and share some common ground. Maybe even discover a new hobby, just for her. She also spends a lot of time checking in on her mum, managing her day to day affairs, and she needs an outlet from that. Her mum is lovely too but she can be hard work.
She has a few health issues which limit the potential hobbies she can do. Arthritic hands are the main problem as she's losing the ability to grip things or hold heavy objects which gets her down and makes her self conscious. She also has arthritis elsewhere making exercise based activities impossible. She can't drink alcohol due to her arthritis medication. She loves a cup of tea and slice of cake, gardens, flowers, animals and a good laugh, amongst other things.
Any ideas on where I could start? I'm trying to put myself in her shoes and go from there but i'm struggling.
I thought about enrolling her on a flower arranging course (she dabbles at home) but didn't know if that would be seen as being too pushy?