How many more tidal waves

[DaughterTroubles]

I do post on here but have name changed for this as too many details and don't want it coming up in a search. Not really looking for answers, just sympathy really.

My adopted DD has had to put up with 6 years of stress from her sister, struggling at school - SEN and social issues, pandemic, missing all y11, anxiety & depression, coming to terms with sister about to get married.
Things were looking up, managed some assessments, she was a bit more cheerful, starting to go out a bit. She was even accepting attending wedding.
We have now had to tell her that prom is cancelled (which we were using as a stepping stone to getting to sister's wedding) and that her BM has had a baby. She has sunk right back down.

We are getting all sorts of help including post adoption and have been for a number of months.

But how much more can she and we take?
What is the next thing that will come out of nowhere?

I'm sorry to hear this - I used to feel we were living in a soap opera. The drama and chaos was relentless.

If it is any consolation, teen years were the worst, because there is a limit to how far you can shelter them from it all, and they lack the maturity to handle the pressures for themselves. Once DD1 was out of the teens she was far more able to handle birth family issues, and DD2 was so much younger when placed they have far less impact on her.

Hugs. I have no answers. My mind has played out all the various scenarios as to how Miss currently 5 could respond to various pieces of information about her birth family once she becomes a teenager that I've tied myself in knots over it. The reality is that she has been dealt a very complicated hand full of trauma and unfairness and all I can do is help her through it as best I can.