Guys help!! (Final time)

Hi (again), so recently two posts of mine regard me ****ing up majorly and not going into college to enrol when I should have. Now I regret this majorly. (For more of a story check out my other threads). Basically, I went in to my college and asked if I could still enrol, they spent a while looking on the system taking down my subjects and then told me to come back tomorrow to meet the head of sixth form (who hates me, but seen as they said meet her I assume there are spaces?). Basically, I was wondering what I should do to make her think I should be allowed to enrol? She's a stern woman, don't think seducing her would work