Just let her

You decide to let Lucy keep going at her own pace, not really wanting to cause any damage to the powerful hypnosis she's under. She continues to just suck the tip as her hand begins moving faster along your shaft. She suddenly begins to pump her fist rapidly up and down your member causing you to moan once more in surprise, you grab the wall to support yourself as you feel your knees getting weak, and have to lean your back against the wall behind you. You let out another moan, this time softer as finish inside of Lucy's mouth. She doesn't seem to react to it, instead she continues sucking the tip until you're empty, before standing up once more and quickly swallowing all of your cum. You smile at her, and she smiles back.

"Would you like me to kiss you again?"

"No no it's fine, we should get to class."

"Okay."

You both have different classes and part ways for them.