Unfortunately, that's often the case. One of the reasons why we say "Believe none of what they say and only 50% of what they do."
That phrase tends to have more accuracy with MLC than WAS, it still is something for LBS to keep in mind.
A meeting to talk, upcoming D process, working on the M, leaving the house, coming back... we can be told any number of things and those things don't necessarily happen.
Keep your hopes low and your expectations even lower and keep working on detaching your emotions from her words or actions.
These sitchs can turn around certainly, we just have to keep working on ourselves because that's all we can control.