In her own time is precisely what Thalia did. She decided to complete her semester before thinking or even considering the thought of meeting Charles's parents, a decision that came back to bite her later on.
The rumours on campus slowly died down, especially after Charles' reaction to the young man who had 'ridiculed' Thalia; most people decided that it was not worth the possibility of a broken nose.
The fact that Charles was engaged to Thalia had also become known; therefore, it ceased to become as juicy of gossip as it initially started as. She was carrying her fiancé's child, so gradually, people came to accept that fact and lived with it.