It's all over the US news too. Hardly obscure.
There are really only two possibilities. Either (as she seems to be alleging) they detained (the media says abducted/kidnapped) her and gang raped her. Or the other possibility which is that they didn't detain her and didn't gang rape her.
The band evidently deny this whereas, she has presumably made a formal allegation (in the UK she wouldn't have made her full statement yet, just an allegation recorded by the police - in the US it may be different).
Is there CCTV, forensic evidence or an eyewitness who can confirm her story or vindicate the band? If there is, it will be under scrutiny now and there will doubtless be press releases from police or lawyers.
Does she have a motive for lying? Only she knows. I don't know if 'Decapitated' are rich and famous, however I suspect they aren't. Does it matter? No, because their tour organiser probably is.
There will be plenty in the media about this.