I think you are doing great and have so much on your plate. The one thing that I recommend is to stop sending the thank you texts. Detaching is way hard but stopping behaviors like that is the first step.
Why? As long as the "thank you" text doesn't devolve into something harmful, it is actually a great example of ignoring bad behavior and reinforcing good behavior.
Sara, if you are the type of person - or want to become the type of person - who is grateful and thanks people for treating you well and doing nice things for you - and it doesn't set up anything detrimental in your life - then keep it up.
-PM
M:12y - BD:12/11 - D:6/13 - 4Ds
"The ultimate measure of a man is not where he stands in moments of comfort and convenience, but where he stands at times of challenge and controversy." -MLK Jr.