"So soon! Oh my God, you have to pick a date, Prue! There's so much that goes into this, which you're probably completely aware of at this point, but still!" Piper was mostly just excited right now. Her big sister was getting married! What was not to be excited about?
Except that. "Son of Satan?" She repeated slowly, an eyebrow arching curiously at her sister. "That doesn't sound...so great." She said, trying to process this. "You're sounding a little bit like Phoebe, you know?" A jest with a more serious sentiment behind it. "How long have you two been together?" Piper was now in the pre-panic mode, but she was keeping herself calm and collected on the outside. The idea of her sister marrying the Antichrist? Not exactly an easy idea to be calm with.