I wasn't a fan of people touching me belly without permission either. I can also imagine that it would be a special thing to feel a baby kicking my daughter...I can imagine longing to be part of that. Either way, your mum hopefully will respect your feelings, but I guess, if at some stage you get an opportunity to share that feeling with your mum, and you feel comfortable with that - I think that would be really special for her.
Do I make sense? I'm not saying your feelings aren't important, because I can totally understand and remember how I felt about my belly - but it might be worth putting aside your feelings about that in order to do something sweet and meaningful for your mum. You're the best judge of these things though. :hug: