As someone who has also commissioned her I can say I feel sorry about how things have turned out. However I thought I could explain some backstory information to why she blocked you. She has in fact been dealing with things far out of her control as of late, and my commission is only half done. As someone who has had family members going through what she is right now, I can confirm she isn't trying to be rude to you just lashing out.
She does not want to deal with being yelled at right now, especially since at the time of posting that aforementioned surgery is tomorrow. She is still on FA however she will no longer be posting her art on FA. This she clarified to me when I had asked.
Its unfortunate that you wont see the commission done, but she is in fact going through something life threatening. I am confident she will give you back your money in the end once she has it. And I do feel sorry you have to go through this on her behalf.