So, going through PT again and I had a thought that is kinda humorous but also bad for the characters. So in other words, sounds like something Jim would do.
We so far have seen Mab push and separate Harry from his allies. We have CD where nobody out of Harry's allies knows about him being alive and coming back except Molly. And even then, it was through Lea and it wasn't supposed to be known. Lea fae talked to her letting her know.
SG, we have Harry trapped on the island, unable to leave and Mab making it difficult to get there. And intercepting messages being sent. And keeping Molly busy to come and help. It was only because of either divine intervention, maybe something to do with being Lady and Knight, or my personal favorite, Harry owns a spot in Molly's psyche because of claiming the rug and flying on it back in GS, that Harry was able to talk to Molly and get her to come back to remove Bonnie. Otherwise, Mab tried to sow distrust between Harry and his allies.
We then come PT where the WCouncil is mostly in distrust of Harry because of his allegiance to Mab. And in BG, on top of the castle when Eb is telling Harry not to trust Mab, that he's being put in a box. And Mab comes back with that it's pretty much what the WCouncil is doing to him. And then the council dumps him at the end.
So, with that all said, we can see a possibility that Mab wants Harry to be isolated from his support group and rely on those that Mab can control. And with Murphy gone, Thomas in stasis, and Butters a KotC so he won't always be around, Harry's group has taken a hit. He has the Carpenter's, he has the Alphas, and he has Molly.
Mab cant touch Michael and his family and the Alphas are not on Mab's radar to be anything but a thorn in her side to be taken care of later. So that leaves Molly.
So here is the funny, interesting, bad thought. What if, since Harry has to marry Lara for an alliance between the Courts, that Marcone wants the same deal, thinking he would marry Mab and have a large step up over Lara. But instead, he has to marry Molly. Yikes. Not only would that tweak Harry to no end, but it would pull Molly further from Harry, adding more obligations to Molly.
Not saying that it would happen, or if it could happen because of the Lady Mantle, but it's a interesting idea.