Is it much worse or is she perceiving it as worse because she’s actually old enough to go to a pub and experience the behaviors and she’s attending to it more now? I didn’t study in England, but I studied abroad in three other European countries (mainly Amsterdam in the Netherlands, with excursions to Berlin and Madrid). The drinking there didn’t seem any worse (or better) than the drinking at my own college (an HBCU).
College students are gonna drink. The focus, IMO, should be on teaching them how to drink responsibly and stopping them from bingeing or engaging in really dangerous activities when they are drinking (like mixing drinking with pledging activities - which isn’t limited to Greeks, mind you - or driving).