Agree sounds like plenty, as at that age they can take a long time to open their presents so it seems like more!
However if you want to get more how about one of the following -something like a play tunnel she can play with on the day, a couple of decent plastic animals to start a collection for a zoo or farm (Schleich type), a cutlery set, cup and bowl or a special teddy?
But I’m wouldn’t go too much more because you’ll regret it when you’re still opening stuff on Boxing Day!
I did that kind of amount when DS was 16 months old and getting him to open them was a bit of a nightmare. Coupled with the excessive amounts he had off family&friends we were unwrapping for days! I think you've got plenty there.