Went to a great party and this girl gave me major IOIs, was always hugging me, complimenting me, being very touchy, telling me all kinds of things and all over me. She did have some drinks, but was not wasted.

Due to a particular situation I had to leave suddenly and help out a buddy of mine, so I couldn't close. From another buddy I heard she left shortly after I did.

Saw her again during normal day time at university and there were very little IOIs, I was actually confused how she went from 100 to almost zero.

Is it still worth it to hit her up now? Does her behaviour at her party mean anything now that the party is over? Or why the sudden change?