Proceed as when you would want to cum together (this also works in the non-penetration H-scenes) and when you reach the 3rd scream go back to 2nd than again to 3rd than again back to 2nd and the third time you'll hear her with the 3rd scream she's gonna stuck out her tongue and start screaming insanely. Also, if you want to cum together with her when she sticks her tongue out, you have to have the red-mushroom-with-bumps before making her entering this state. Also note that after she came first with the tongue stuck out, if you continue scrolling up she's gonna cum again and again but you're not gonna get excited anymore. If you want her exit the tongue-stuck-out state, just wait a bit for her to cool down.