Don't feel too bad, Maggie.
It sounds like you live a busy life(a fun one, at that ), and its easy for little details to slip past.

Maybe after your bowling league you can call her up again? Just to have a chat and to let her know you love her. You can make things up next Friday. =]
((((hugs))))

I really dread the day I move out, my mum will be all alone, aswell.