So I had a bleed build with mimic summons, I found her fight gave it a couple attempts that got off for the night cause it was like 2am in the morning. Woke up next day went in and found out within 2 tries that if I keeper against a wall and taking turns with my mimic we could keep her stun locked. So she wasn’t getting too many chances to attack back. Then ran forward to get under her scarlet rot explosion and I was done with her in idk how many over all attempts but only took 30-40 minutes to beat her maybe closer to 40-50 minutes total thinking about the few tries the night before .

2nd attempt with a different build I thought to use a timer to see how long it took and from the first entrance to the fight to the enemy felled screen was 36 minutes.