Ok well, if you want her back you need to find yourself first and this is gonna be one of the few only times I will give this advice...
Lost you are probably not gonna like this:
You need to get out of her life, and you have to do it now...it could be moving out any of you... Whatever ends the spiral....
She is in a "juvennal" state of mind feeling like a teenager again and while she is at this point you need to step out way far, otherways you are not gonna be able to deal with this...
When the student its ready, the teacher will appear... Even after all this time the sun never says to the Earth, "You owe me." Look what happens with a love like that,It lights the whole sky.