looking for support.

[RBinBR]

It's like she's throwing this "friendship" in my face now and doesn't care how I react to it.

On the contrary, I think she's trying to get a reaction from you. Remember this:

The W actually told me that she's making herself look nice, hair done, nails done, the works just so that I know what I've lost.

Your W is trying to hurt you right now to get a little revenge for the pain she feels that you've inflicted on her. The good news is that you can defuse a lot of that by validating her feelings when you get the opportunity and by just being kind no matter what. It's really not much fun getting revenge on someone who's being gentle and kind to you.

Also, don't let her see that she's successful in hurting you, if you can help it.