I would just ask. We put the kiddies names on the invites for our wedding cause DH's family had to come interstate so we kinda had to invite the kiddies but in saying that there were some of his cousins that have kiddies and we didn't know about them and we had them asking us and we said yes!!

I think they would let you bring her cause of you having to travel so far and you are breastfeeding and they are bound to know that!!