There is a bug in the game right now it seems that makes it impossible to raise Rebeccas favor over 30. To progress with her you got to cheat it up to 60. This mod from dsconstructor works fine for doing that.
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. I hope KsT knows about this so he can fix it.
I restarted the game recently, because it was so long since I played I had forgotten most of what I did in the game. And the grinding in this game is unreal. Raising Emmas initial favor takes ages f.ex. In addition the UI needs a workover. In some screens you have to back to a different room to be able to access the travel menu, which leads to a lot of uneccessary clicking. And after school if you talk to Billy you get automatically sent home, so you have to travel back to school if you want to enter it to progress with Rebecca. Not a serious problem, but still fairly annoying. All in all it is still a good game though.