EXCLUSIVE

The 8-year-old girl who was molested by Mama June's new guy is June's own daughter, Anna ... and Anna wanted us to tell everybody.

TMZ broke the story ... June is dating her ex, Mark McDaniel, who was released in March after serving 10 years in prison for forcing a girl to perform oral sex on him. June has been dating McDaniel since his release -- something she denies despite photos and other evidence -- and that's why TLC cancelled "Here Comes Honey Boo Boo."

Sources tell TMZ ... Anna Cardwell -- who is now 20 and married with a child -- believed her mom earlier today that she was not dating the man who molested her. But we're told Anna has now received a lot more info, and is now convinced June betrayed her by seeing McDaniel again.

Anna -- known on the show as Chickadee -- wants it known she's the victim because it makes what her mom is doing all the more egregious. We're told Anna feels her relationship with her mom has been destroyed, and the only way June can see her granddaughter is if McDaniel is nowhere to be seen.