Universal Music Group (UMGR) is firing back at the woman who claimed Diddy and singerAaron Hall sexually assaulted her in the ’90s when she was 16 years old. Documents obtained by RadarOnline.com show the music corporation demanded the complaints against UMG in Liza Gardner’s bombshell lawsuit be dismissed, insisting the company did not enable the rappers’ alleged misconduct while claiming she presented no evidence connecting the corporation to her accusations of rape. As this outlet reported, Gardner sued Diddy, Hall, UMGR, and more in November, claiming she met them at an event and they star…