She shivered as her aunt moved her shaft for her, and then blushed slightly, nodding once at the suggestion of going slowly.  "So I push this in here, huh?" she murmured, obviously talking to herself as she reached down, lining the penis up with Rika's folds, and giving one steady, slow push into the other girl, her eyes widening at the sensations this sent crashing through her body.  She moaned softly, and then looked up at her aunt.  "Do... do you think it... it'll be okay if... if we unsilence her?" she asked, her wand still clutched in her hand.  "I... I mean, she... she can't say how... how much she likes it if... if she can't make a... a sound... but we don't want her s... screaming to alert everyone in the... the whole school."