I'd echo what MB has said - I stopped going to PanGash about half way through my second year for the exact reason that my flatmates (all girls) started to feel uncomfortable in there, and there was a growing sense of unrest whenever we went (even on student nights). Definitely a place to avoid, as is Oceana on a Saturday night (every other night it's ok though).

I'd recommend Syndicate - the only trouble I've seen or heard of in here is a lad jumping over the railings around the dancefloor. People go to have a good time and there's rarely any trouble. Student nights are best - Saturday tends to attract douchebags who think paying £4 for a bottle of Smirnoff Ice makes them cool.

Thekla, as a night out, varies. It was always safe and had a good atmosphere on the many occasions that I went, but the music is a bit up and down. You tend to get a lot of shite local indie bands playing there, but there are also good dubstep/d+b nights too.

Other excellent (and often underrated) places to go are any of the bars on the Triangle (especially Illusions) or Whiteladies Road (last time I went, Alter Ego did BOGOF cocktails on a Wednesday night...I recommend the Beverley Hills Iced Tea), Elbow Rooms and Java (on a Friday night). Tell her to get herself to Lizard Lounge - cheesy music, cheap drinks and a good atmosphere. Any trouble is rare and caused by posh public school boys in search of "banter" so it's nothing to worry about.