The girl’s mother discovered threatening messages on her Instagram telling the little girl to kill herself and that she deserves to die.
Last month, Disney Channel's Good Luck Charlie, made history featuring the first openly gay characters on the Disney Channel.
Disney Channel
The episode revolves around a playdate between Charlie and her new friend Taylor, who has two moms Cheryl and Susan.
Disney Channel
According to police docs obtained by TMZ ... Mia Talerico began receiving threatening messages last month on her Instagram -- including one reading, "Die Mia, F**king Die in hell! Kill yourself, you deserve to die."
The suspect then sent a picture of Mia's head with a bloody fist covering it ... with this message, "Yes, kill you stupid bitch."