Cause for alarm?

[MrBond]

Personally I wouldn't give her any response. Whatever you say to her at that point is going to blow up in your face. You've seen it time and time again. She finds a way to twist it and make it like it's your fault or brings up how bad you were.

Don't poke the hornet's nest if you don't want to be stung.

Let her go through what she needs to on her own. Be there for support, but don't enable her behavior.