Your sister is Billie and you didn't like my sisters, and fought them. Also you have pyrokinesis and it's best to not piss you off lest you set something on fire. Your parents were killed, and something about the Triad. I didn't get overly many details from you, but Billie was here when I first showed up, as were Phoebe and Paige. We actually all managed to get along, for the most part.
[OOC: You seriously asked that just to make me sift through comms from TWO YEARS AGO to try and remember what Prue actually knew, didn't you? I hate you, Irish One. :P Though for the record, I didn't really find an answer. Sooo I'm fudging.]