My FMIL turned down my mom and step-mom's offer to co-host a shower so my two moms went ahead and have planned a shower for our side and sent out invitations over a week ago. A couple of days ago FMIL called FH because she was mad and hurt that she didn't get to invite her "guest list" to the shower hosted by my two moms. FH told her that since she declined to co-host she does not get to invite her own people, but she can host her own shower for their side of the family. FMIL said that is not "traditional." Were my moms supposed to ask FMIL for a guest list to the shower they are hosting after she declined to host it with them?