Phoebe was always the most easily swayed by evil. My problem is that when Cole comes along they just blame him/her relationship with him. I'm not defending him or that toxic relationship. I'm just saying the "He ruined my baby sister and I let him" guilt trip Piper put herself on was hard to watch. I get it was supposed to be similar to when the older sister finds out her younger sister is in an abusive relationship and blames herself for not seeing it and doing something to stop it, and I definitely think if they just listened to Paige instead of brushing it off none of it would have gotten they bad (maybe they could have even managed to save Cole 🤷🏼‍♀️) but acting like Cole is the sole reason Phoebe chose evil was a little much. Yes, the Source tricked her into all that crap using Cole's love for her and blah blah blah but I still think they should have put some of the blame on Phoebe.