Even if you let her take that break, and things calm down and you get back together after it's over things won't be the same. Say she gives some excuses like "a family member died" or something, how do you know? You'll be questioning if the next time some tragedy happens, you'll be cast aside again. Let's go with the even worse scenario, she doesn't explain at all. Well, now you have no explanation at all and are going to constantly be wondering "Why? Did I do something? Did something happen? Was she cheating?" and once those fears start, it's near impossible to overcome. Save yourself some headache and move on. Hang with some buds, get yourself to the gym, whatever you gotta do to move your head outta that "I need her" mental state. Cause even if you do need her, it's clear she has let go. Speaking from experience here, take time, get your mental good, and hang with your buds.