I stopped buying/reading WW shortly after Perez's run ended, though I've followed the character off-and-on ever since.
Noted female archaeologist with a teenage daughter that become close to Diana. I've always had a feeling that Helena & Cassie Sandsmark were basically Julia and Nessie Kapetalis Kapetalis, but Byrne filed the serial numbers off Perez's characters because he wanted ownership over them...