When a pregnant woman goes missing, her hospital phobic boyfriend must escape a doomed abortion clinic before she succumbs to its long forgotten curse.
In your first question you’re basically asking “how does he escape?” Suffice to say, he does, to go into detail would mean telling you the entire story. I’m not going to do that.
To answer your other two questions – When he has escaped, she will have been freed of the curse.
Am I missing these elements in my logline? If so, what would you suggest?