I don't see anything wrong with Tomoyo's characterization! Quite the contrary, really. You play her really well and manage to balance out her softer, kinder side with her ridiculous one, which is something that could easily be overlooked.
I do think it'd be great to see her around more often, though. You seem to fall back onto updating only and not tagging others as well, so your characters - who are both sociable and easy to play with, and could be involved in all sorts of situations - end up not being around that much.
But other than that, they're both fantastic and really fun to play with, so I wouldn't worry about that.