Demi Update: What happened over the weekend and her dad opens up

As you know, the blogs are buzzing about Demi Lovato and what led to her checking into a treatment facility to deal with "emotional and physical issues" over the weekend. According to sources close to Demi, an altercation happened at the Peru airport where Demi got in a fight with a female backup dancer. Reports also say that Demi made verbal threats to Ashley Greene (Joe Jonas's new GF) who was also there, in front of the entire tour group. Mr. Jonas stepped in and said "That's it, you're going home" to Demi and sources say the situation made Demi realize that she needed to get help.
Also, Demi's biological dad, Patrick Lovato has spoken out about the situation saying that the pressures of Hollywood got to her and he was worried about life in the spotlight. "Yes, there are a lot of pressures," he said. "That is one of the things I worried about when she signed with Disney. It's just going to happen." Dem's parents are divorced and her dad has cancer, and he explained that he hadn't seen Demi since 2008. "It's been a couple of months. I've had cancer, I've been in the hospital for two months and I just got out. She hasn't visited, she's been too busy, she's been way too busy," he said. He added that he was surprised about her checking into a treatment center, but that, "She'll be fine, she's strong alright."