Jenna frowned, had she scared you off, did she go farther than she should have? Maybe she was more invested in this than was part of the plan. It wasn't something she expected to happen, it just felt right. Like it or not Jenna couldn't do everything herself as much as she wanted to, you 'helping' by offering something to her mother to make her happy, made Jenna feel like she actually was in a relationship, that was obviously not your intention, but that's how she felt and she acted as such. Whether or not you wanted to slow things down and keep it to a more 'professional level' was something you would have to decide and then let her know. Until then she would see you tomorrow continuing to be the happy self she presented herself as. Later her father came back in, asking where you were, she explained you had to leave suddenly and that you apologized for the abrupt exit. Her father just shrugged and asked if she wanted to play some Halo, she declined as she had homework to do.