I actually think that Ashley hasn't been getting along with Nikki Reed, not Kristen. Nikki is the one who hasn't been on set much at all unless she was absolutely needed. She stayed behind in LA longer than the rest of the cast and hasn't been seen hanging out with the rest of the cast. Kristen was out with Rob at a dinner just last week. Ashley, Kellan, Jackson and some other cast were there...no Nikki in sight though. Ashley and Nikki have butted heads in the past. It wouldn't surprise me if she was the one that wasn't getting alone while they were filming in Baton Rouge and that's why she's been MIA during most of the filming in Vancouver so far.