No way! She's too young and school would likely not allow it anyway and not good for young nails/skin. Also it won't even use that much time up.
For winter activities - cinema, theatre, bowling, indoor "rock climbing", many bowling places also have pool tables which can be fun too, go swimming (esp popular if you have a water park type place nearby), theme park, ice or roller skating depending what's near you, if you have a dry slopes place then there's usually some activities there, meals out (doesn't have to be expensive but somewhere that's a sit down meal and have a chat and get to know her), if it's dry no reason not to wrap up warm and go a nice walk, pottery cafe, any good museums or art galleries near you? Lots of these kind of places do kids activities at the weekends and school holidays. Mostly arts and crafts stuff.
Google "free and cheap kids activities [your nearest large town/city]"
That'll give you loads of ideas
So she doesn't come to yours for contact?
Then Google for the place you're going to, ask her for ideas ask mum for ideas...
Ahh ok broken knee rules out the active stuff for dad. Although pool playing could still work depending how mobile he is (he can sit when it's not his turn)
But cinema, theatre, museums, art galleries, pottery places may work
Large Museums etc generally have loanable wheelchairs/scooters that dad could use.
Yes pick up a pack of cards or dominos and take them to a family friendly pub/dinner place to play great idea! Some of these kinds pubs even have board games and cards and dominos on site for patrons to use.
But I'll leave the active ideas there you might be able to use them once dad back on his feet properly always good to have as many ideas as possible