So far ~ but we haven't gotten the toxicology report(s) yet, on either the alleged victim or the rugs taken from the site of the party.
If the skank is falsely accusing men of raping her, how big a leap is it for her to claim the drugs in her system were given to her in a drink? She's already screwed up by ID'ing guys who have alibis.
The bathroom...rugs, towels...don't implicate the accused. None of her DNA was there, either.
Try again. So far, you're batting zero.
Even if she had drugs in her system, it would not be evidence of rape.