Sending hugs (((((((( Monty girl ))))))))
I'm sorry you are getting triggered but in a way it is good that your sister is getting the help she needs. There may come a time when you will both be able to support each other having both been abused.
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Pegasus
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“Everybody is a genius. But if you judge a fish by it's ability to climb a tree, it will live it's whole life believing that it is stupid.” - Albert Einstein