cam,

You have a legal obligation to take care of. That is one thing. Take care of it with sound mind and protect yourself as best you can.

You don't need to "remove her from your life."

She has already removed you from hers.

Does it sound like I am saying it is hopeless?

I am not.

cam, very simply. Take care of your obligations.

Work on strengthening yourself.

Two very simple (but not easy) things to focus on right now.

BITS

Happiness is not something ready made. It comes from your own actions.