Pretty crappy IC if the solution is life sans tyler!? I mean the root of the trouble isn't getting taken care of. But I'm not saying anything that you probably don't already think. Too bad really.
And, while I love to hear of family members that support the their inlaws - I cannot help but wonder if that doesn't help your sitch. I mean, I told my in-laws NOT to ride AWAW about her decision - that she needed them more than ever. It took my SIL by surprise, but she immediately backed off and it actually helped their relationship very much. I'm wondering if being the stand-up guy that you are, you should address the same with your FIL. Short story, her resolve only deepens each time he says something like that.
Just a thought.
Sven
Never sacrifice the great for the good. Sometimes the beauty of grace is that it makes life not fair.