
Once Sits With Fairies knew she was expecting she knew she had to look for a legend's blessing. She knew the leader of the Unseely was a kin blessed by the MotherFather but she also knew that he had a bit of a temper and liked to pull tricks. Plus it wasn't his time to oversee the tribe at the moment, so he might not be willing anyway. It's the time for the Unseely to rest while Fair is running things.
He's not the only one chosen by the Mother however. She's just going to take her chances on whichever one approaches her, for her children. She just needs to be patient.