Very simple. Baby due imminently, family member very put out by "rules". Causing lots of stress and anxiety about having to protect boundaries when I'm at my most vulnerable. Just want to know if I'm being ridiculous on this one point.
YABU so long as they didn't have a visible cold sore I wouldn't have a problem with the kissing baby's face and hands.
YANBU even if there's no visible coldsore I would feel uncomfortable about them kissing baby's hands and face.