A friend-colleague had a baby about 5 months ago and is invited to the wedding. She knows that it's a child-free wedding and reception but has asked me to lift to rule just for her. I'm really uncomfortable with being super blunt but I did indicate that wasn't really an option. Now, whenever the wedding comes up she talks about how she's going to be the only one there "with a baby on her boob." I usually give her a "haha...very funny look" and don't affirm that this is ok. It's becoming clear that she may actually do it. It's a very fussy child so it's presence will not go unnoticed.
Help, I really like her and don't want to make our friendship/working relationship awkward.