I didn't realise that she was engaged to Ali Bastian's ex.
Sorry that she's had a bad time and had to leave but, tbh, not that surprised as she is soooo thin that she doesn't look like she'd have many physical reserves (I know that dancing is tough and pros have to have enormous strength and fortitude, but they can regularly top up those reserves with rest and nourishment, as needed). Once you are physically exhausted, mental fatigue can set in very easily and things can quickly become too much for you.
I hope she gets to enjoy some R&R at The Versace before they fly her home.