'Teen Mom 2' Leah Messer Custody Battle: Drug Rehab Affecting Keeping Daughters!

Teen Mom 2 star Leah Messer has had to endure a long custody battle with ex-husband Corey Simms, especially after being accused of being a drug addict. However, the MTV star may soon be able to stop fighting her baby daddy if she stays clean after returning from rehab.

"So far, Leah's been on good behavior and things are running smoothly with her and the kids," a source told Life & Style. "If her behavior raises any red flags, they will definitely make a move."

Those "red flags" include deteriorating to the same kind of person she was before going to rehab. Since second ex-husband Jeremy Calvert is away working as a pipeline engineer most of the time, Leah has their daughter Adalynn while still sharing custody of twins Ali and Aleeah with Corey.

As MStars News reported, he mother of three's costar Jenelle Evans seemingly spilled the beans on Leah's alleged pill popping.

"I can definitely relate because I went through an issue she went through," she told Perez Hilton. "I really wish she would reach out to us more, just so we could talk. We're not going to jump down her throat. We don't bite, she knows that."

"I think she wants to keep as much privacy as she can because everything has blown up right now and she doesn't want any attention onto her, which is understandable," the North Carolina native went on.

Watch her interview here:

While Leah's drug dependency has been widely reported, her mother Dawn Spears still denies her daughter ever had a problem.

"TRUE FANS listen up. Leah is NOT going to rehab lol. This is Momma Dawn and I 100% ASSURE you that Leah is NOT going to a DRUG REHAB," she wrote on Leah's Facebook page. "Lots of LOVE to the true fans. all will come out on the upcoming show about Leah Dawn Calvert, Jeremy, Corey, [Corey's wife] Miranda, and the babies. But rest assure I HATE drugs don't want association with them and wouldn't NEVER Condone them."

Do you think Leah will be able to maintain custody of her kids?