Moviehole spoke with Rachael Tay­lor and con­firmed that she will not be appear­ing in the sequel:

“I wasn’t con­tracted for a sequel any­way, but I also think it would be pretty ridicu­lous for my char­ac­ter just to show up and say ‘We’ve got some more com­put­ers to play with!’.

More impor­tantly, I don’t think I’d wanna do it to be hon­est, and not for any par­tic­u­lar rea­son other than the fact that I’ve done it. I’m just drawn to doing dif­fer­ent things. It was the same when I went to the U.S, I didn’t want to do TV, because I’d done it. I want to be able to mix it up all the time.”

Well, that’s that.