In the end, our freshly minted soapland girl understands the bottomless pit she's feeding, and stops it. The other pro-stitute drops her like a rock, since drama, hot guys, alcohol and self-harm are her sustenance. Just knowing someone personally is meaningless, if those things are missing.
It's natural that as a human being, one wants to matter, to be the main character - at least in your own life. The jarring reality that in the grand scheme of things, one does not matter at all (cosmic flash yo), and even in a specific context, one matters very little, can be hard to bear. Using crutches brings temporary relief but stops you from figuring out your own, personal answers to those problems.