As far as dumping all your work on someone and expecting to get credit anyway goes, doing that so you can kiss someone until whatever am is one of the dumbest reasons.
I don't really get her. She's been suddenly dragged over when she's not interested and suddenly she wants to put her life on the line to treat this guy for no benefit? Why?
He did mention that it would sell only at lunchtime though. It's just that their classroom is too far away and once their break actually started others would get there first. So they left early to wait outside the cafeteria until it opened.
It's more that she wants to reach the higher floors with this team first. Once she levels up she can only go to floors she's already been to. One of the main reasons she was hired was that she could tell the team what the higher floors are like.