Hi treehouse. I know it can be really hard when others take over and kinda 'smash' what we know as our reality to smithereens. Sounds like she and her feelings are right up front right now. I sure know how uncomfortable THAT can be.

So, I guess you have two options here... you can fight it, and try to make that reconnection with T... or you can let her just be how she needs to be for a bit and wait til her 'stuff' settles down.

Whichever way you go... know that you are T are cool, right? Even tho your usual connection has been pushed aside by her at the moment, you and T are still cool and will reconnect as soon as teen cools down a bit.

This could be an opportunity to get to know the teen a bit more. See what makes her tick, what she likes, what she doesn't like... what she needs and wants. It also could be a chance for her to get to know T a bit better.
Being able to understand just WHY she needs to isolate and push away could also be a chance to understand your own triggers a bit more.

She sounds kinda spunky. Parts of me are kinda nodding their heads and going "yeah... cool". LOL. I guess they 'get' it.