In every account of the divorce I have read, it's that SARAH pushed for both the separation and the divorce. HM the Queen is said to have wept and urged her to reconsider...but she would not.
I think she was in the middle of her affair with that Steve Wyatt guy and she thought she was going to have both her freedom and access to all the Wyatt $$$$..but it all blew up in her face in spectacular fashion.
So she ended up with no Andrew, no home, and none of the security and protection the Royal house could have afforded her.
For her to moan and complain about how things worked out...even allegedly under hypnosis...is just really beyond irritating.
Here Here! Well put.