Her name is Danmell Ndonye

The name of the Hofstra student who falsely accused four men of rape has been published. Here it is at NYPost. (Don't know who published the name first.)

Update: Sounds like the press found out her name with unofficial help from police. From HuffPo:

The woman was identified as Danmell Ndonye of Manhattan by a law enforcement official with firsthand knowledge who spoke on condition of anonymity because he was not authorized to release the name. A call to a Manhattan phone listing for a Ndonye was returned by a woman saying it was a wrong number.