If she keeps stalling, I would say one of the following to her:
"OK, but please know that my patience is not infitite."
or
"OK, but I consider NO decision to also BE a decision, and will have to plan accordingly."
Do not TELL her your deadline, but HAVE one (for yourself), and let her KNOW that there is not an infinite amount of time to make her decision, and that what's left of your love for her is eroding every day.
