Kathia Maria Davis, 44, of Laguna Niguel is accused of having sex with at least 2 members of her son's youth hockey team.
Davis was arrested at her home last week on suspicion of unlawful sex with a minor, according to Orange County Sheriff's Department spokesman Jim Amormino.
Authorities say they are looking into a possible third victim.
"The suspect would have parties for members of the hockey team," said Amormino. "This also involved some sleepovers. One of the alleged acts did happen at a sleepover after family members had gone to sleep."
Davis' neighbors say they are surprised to hear about this news.
"She's super friendly, really outgoing and nice," said neighbor Elizabeth Willey. "I've chatted with her a couple of times and I'm shocked to hear that."
Davis was released on $25,000 bail. She is divorced with children.
Monday night, the operator of the Anaheim rink where the team plays encouraged other parents not to worry.
"It's shocking," said Masha Ladonia. "This doesn't happen. I don't want parents to worry about this happening with their children because I don't think this is common. Especially here at KHS, we're a very tight knit family."