'Grey's Anatomy': Demi Lovato isn't crazy. Really.

Demi Lovato fans, get ready to see the Disney Channel star as you've never seen her before.

The 17-year-old isn't singing a happy tune on Thursday's (May 13) "Grey's Anatomy" episode "Shiny Happy People."

In the pictures Zap2it posted previously, it's apparent that damage has been done around her eyes -- scratches or abrasions. Now this clip gives us more info about why her character, a teenager named Hayley May, is at Seattle Grace.

Her possible savior is Karev ( Justin Chambers), who we really do hope can help her out. We don't like to see Demi all desperate and depressed like that. Aww, teenagers should be happy-go-lucky and dating people like Joe Jonas.

Check out the drama:

Pretty intense stuff, right?

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Photo credit: ABC