She is 10.5 weeks old. She is so unlike Sophie in that she is very reserved. She checked out fine with the vet. Sometimes it seems that she isn't hearing or seeing well

but I've tested her with sights and noises and she will respond. She rarely seeks out attention from me, unless I leave her alone in the room. Then she will yelp. But when I'm close by, that seems to be enough for her. OTOH, Sophie is an attention hog and always has been.