A friend of mine, who did not make our final guest list, has offered to help with a part of the wedding. I'd like to take her up on her offer, but am I obligated to then invite her to our wedding? My first thought was no...she's being nice and making a very kind offer. However, the more people I ask say that we should invite anyone who helps with our wedding. We haven't sent out invitations yet, so it's still possible, but I feel like if we invite her to the wedding it will appear as if we are just inviting her in exchange for her favor (which we are!). What do we do?