Jonni’s 23-year-old daughter, Christina Morris, disappeared almost two years ago after a night out with friends.

Jonni has been relentlessly searching for her daughter ever since, but she says the time she has spent trying to find Christina has now put her marriage in jeopardy.

“I don’t know how to stop,” Jonni says on Tuesday’s Dr. Phil, adding that she’ll often spend 10-12 hours a day looking for Christina. “My obsession to finding my daughter is destroying my marriage. I definitely feel like my husband [Ronnie] does not understand how deep my pain is … I told Ronnie I didn’t care about him, I didn’t care about anybody but Christina.”

Christina was last seen in August 2014 when, after a night out with friends, she was spotted entering a parking garage with an acquaintance, Enrique Arochi. Enrique was seen leaving the parking garage three minutes later alone in his car – Christina has not been seen, nor heard from, since.

While Enrique has denied any involvement in Christina’s disappearance, he was arrested in December 2014 and charged with aggravated kidnapping, after authorities say Christina’s DNA was found in the trunk of his car.

Enrique is now behind bars, but there has still been no sign of Christina – and her mother says she will not rest until she gets some answers, no matter the toll it may take on her loved ones.

“Christina comes before anybody, including my husband and my stepsons, because Christina is the first love that I’ve ever felt in my entire life. I cannot think about anything else until I have closure,” Jonni admits.

Ronnie says he understands his wife’s mission to find his stepdaughter, Christina, and he has been involved in the search since the beginning, but their marriage may have reached a breaking point.

“Jonni’s obsession with finding Christina has caused huge problems in our marriage. She talks about Christina nonstop. She’s on her phone, she’s always searching. It’s all she thinks about. It’s torn our relationship apart,” he explains.

Ronnie says he’s not the only one affected by Jonni’s tireless search for Christina – he claims she’s also neglecting her two stepsons.

“Jonni’s only child is Christina, [but] she also has two stepsons. They miss her and they need her too in their life. She is not there for them,” he adds. “Jonni is neglecting our family. I don’t believe Jonni is fighting for our relationship … Jonni needs to think about me before we lose everything.”

Can Dr. Phil help Jonni and Ronnie get their marriage back on track?

If you have any information on the disappearance or the current whereabouts of Christina Morris, please call the Plano Police Department at 972-424-5678.