In regards to her self exile, straight to the point, taking ideas and opinions regarding how to bring her back. Not sure if I need to elaborate further. >.>

I know Molly was very put off by Kerowyn taking off without saying goodbye to go join the exiles and basically saw it as being abandoned. She's probably less mad about it than she was four years ago, but she's made peace with losing her friend and thinks that self-exile should be upheld the same as normal exile. She was on a campaign to destroy all of Kerowyn's anchors prior to the break to limit her ability to sneak back into civilization and break her exile. It's hard to imagine what would change her mind.

I think the biggest thing is that Kerowyn really seemed like she believed she could flout it at will. The rules were just an inconvenience for her to circumvent with her magic and she did things whatever she thought was the right way. To come back I think she'd need to realize that that was wrong.