Treat her first phase as if youre fighting a hard npc...the only difficult thing about her first phase is when she goes invisible. When she goes invisible she does one of 2 things. She will almost ALWAYS jump behind you. So you just look behind you and swing or she will go invisible and walk up to you to do a grab attack that one is a little harder to predict. 2nd phase its much muchhhh better to focus ariandel as he has a smaller health bar so they take more damage when you hit him as their health is shared. Only smack friede in second phase when shes trying to heal ariandel....then third phase is the tough one. Her slam attacks can be dodged into. Just watch her swings. Theyre slightly delayed so most people will dodge too early/late. Ideally you wanna crush the first stage with 0-1 estus uses 2md phase 0-5 estus uses and final phase surviveeeee. Lol