She keeps biting the kitten
DD is 10 months old, we have a kitten that is about 10 weeks old. They love to play together but DD has started grabbing the poor kitten by the ears, feet, tail, head...anything she can get hold of. She will drag him off the couch or our laps or just pin him down on the floor. Sometimes she sits on him too. Usually he doesn't seem to mind this and it's quite funny to watch.
Over the past week I've noticed that DD will grab and pin the kitten down and then bite him on the side or try to give him a raspberry. The poor kitten gets drenched in DD's slobber.
How can I stop this? Is it going to do DD any harm? Should I just keep an eye on them?