EXCLUSIVE: Arizona Sobbing About Losing Her 'Little Girl' on 'Grey's Anatomy' Will Break Your Heart!

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Word of advice: grab some tissues!

The custody battle over Arizona (Jessica Capshaw) and Callie's (Sara Torres) daughter is getting even more emotional on this week's all-new Grey's Anatomy -- and only ETonline has your exclusive sneak peek of Aizona's tear-filled breaking point.

"I'm going to lose this case," Arizona wails through a flood of tears while sitting in her car with Chief Webber (James Pickens Jr.).

WATCH: Ellen Pompeo Talks 'Grey's Anatomy' Without Patrick Dempsey!

"I'm putting up a losing fight. It's just going to hurt Sophia," she continues. "And it's going to end up with me losing my little girl anyways because that woman is watching me be a terrible doctor and a terrible mother -- which maybe I am. Today I feel like both."

After that sob-filled confession, Webber breaks his compassionate silence to offer Arizona some empowering advice. "If you want your daughter, you're going to have to fight like you've never fought," he stresses. "And you're going to have to stand up for yourself and believer you deserve it."

Grey's Anatomy airs Thursdays at 8 p.m. ET/PT on ABC.

Want more Grey's Anatomy in your life? Press play on our video below to watch Ellen Pompeo talk about how the medical drama has changed since Patrick Dempsey's exit!