You can look at this as a phase where your wife is testing your commitment... she's being the most miserable person on the planet in a very misguided attempt to find out what kind of man you are...

So, show her...

What you could do is not go WITH her to her parents, but go on your own...treat it like a date or something and her parents are setting her up with you...

90 days is a lot of time to work on her... and at the 90 day point she can always ask teh courts for more time.. it happened to TWolf on this forum too... he had 30 days and at that point his wife asked the judge for another 60... he was shocked but he got another sixty days to work on his wife.. and that's exactly what he's doing...

You need confidence here... not arrogance but confidence in yourself... if you project undesirability and doubt your wife is going to feed off that... whatever energy you are projecting your wife is feeding off of ... so make it something you WANT her to feel...

Commitment is a powerful emotion... give it time and trust that your wife is still in there somewhere...