I'm trying to breathe reading this...breaks my heart.
(Sorry I didn't read this sooner. How is your situation now?)

Have you tried guided meditation where you visualize positive things for your future? People have also told me reading the Psalms have helped them out a lot. If it is any consolation, I only have positive wishes for your future:

That your daughter be returned to you, and live happily with you until her adulthood.

Call it karma, "reap what you sow," or whatever you want; these two toxic adults will not be able to get away with their behavior forever. At some point, the tide will turn and you will be rewarded for doing the right thing.