It was not an issue. There was no logical point to his tirade against what you couldn't accomplish. I am happy to help.

A; Offer to help her with running the computer lab.

[You ask her if she would like help running the computer labs, as you logically deduce that it would lead to more time spent with her than option B, as well as still being a bit awkward about option C, and being to fucking nerdy for option D.]