“Teen Mom 2” star Leah Messer is finally speaking out about her custody battle with ex-husband Corey Simms. Two weeks after it was reported that a judge granted Corey, 36, primary custody of their 5-year-old twin daughters, Ali and Aleeah, effective immediately, Leah is sharing her side of the story.

Speaking to Us Weekly, Leah, 23, says she was gutted by the court's decision during an Aug. 24 hearing to grant her ex primary custody of their girls. "It was like a slap in the face,” Leah, who now only has weekends with her eldest daughters, told the magazine.

As In Touch Weekly previously reported, a judge granted Corey primary custody after noticing the girls were tardy from school. Leah says that while her daughters were late for school one day, Corey's accusations about their school records are untrue. She says she had a school board meeting about the issue earlier this month and plans to rectify the her daughters' tardies.

“I talked to the superintendent and I’m sending them the [time-stamped] pictures to prove the girls were not tardy,” Leah said. “They’re going to take them off.”

Ultimately, Leah says she’s hoping to work out a 50/50 custody arrangement with Corey, who is due to welcome his third daughter, Remi, with wife Miranda in January. "I feel like they should have both of us in their lives,” Leah said. “At the end of the day, my kids are going to be happy, and I don’t care what I have to do to make them happy."

While Leah and Corey’s new arrangement means the “Teen Mom 2” star only has Ali and Aleeah part time, she does have primary custody of her 2-year-old daughter Adalynn with ex-husband Jeremy Calvert. However, recent rumors have indicated that Jeremy may be considering fighting for primary custody as well.

Leah and Corey’s custody battle was a main storyline on “Teen Mom 2” Season 6. The show is expected to return for a seventh installment in the coming year, though MTV has yet to make an official announcement. It’s unknown if Leah and Corey will return to the docuseries.