Toria made a fashionably late appearance, though some of this was due to persuading Tymor to attend the party as well. She'd pointed out that a) there were eligible and pretty noble women attending the party, and b) that Aunt Lyanora had been nagged successfully into attending and would likely not have a good time without having people she was comfortable with there.
The combination of the two had been enough to persuade her brother to attend. Tymor escorted her to the party, but quickly sought out people he knew to mingle with afterward.
In the meantime, Toria took the time to be social with the Dornish lords and ladies attending Elia's party. She smiled across the room at people she was already acquainted with, as a way of silently greeting them.