I'm doing this for my dad, says Shannen Doherty on 'Dancing with Stars'

Former Beverly Hills bad girl Shannen Doherty turned teary-eyed Monday night in "Dancing With the Stars."

Doherty revealed that her beloved dad suffered a massive stroke at Christmas and that she is trying to stay in the competition for him.

"He lost his ability to speak and a lot of his mobility, and it was really rough," she says.

"And when I mentioned 'Dancing With the Stars' as a joke because I'm so nervous in front of a live audience, he got really excited and we struck a deal. And that's that he's going to work really hard on regaining his speech and mobility and I'm going to get over my fear of a live audience."

"I had not seen him light up before," Doherty said.

"He'd been to a couple of my rehearsals, and he just got so excited about it. Now it's a negotiation tool. When he's feeling down and tired and he doesn't want to go to physical or speech therapy, I rush over to their house and say, 'Dad, look at me, I can go dance or I can stop. It's your choice.' And he gets up and goes and continues to work hard."

Doherty, 38,  is partnering with two-time champion Mark Ballas in the competition which also features Nicole Scherzinger, Evan Lysacek, and the "sexy, sexy," Pam Anderson.