Kissing my Bump?!

🖤💙
My MIL tries to kiss my bump whenever she sees me or whenever we talk/FaceTime she says how much she can't wait to see us again so she can kiss it. 
I've consistently told her No and was initially like I don't want anyone to touch me but I gave into that because I felt bad (we don't have a good relationship and I didn't want her to think I was merely being spiteful).
A) is that a very weird request?
B) is it mean of me to say no?
C) if it isnt or is, either way, the fact she won't let it drop.. is that rude of her or am I being sensitive?