Just finished her on on first sl1 run. I ran no armor, +7 deep broadsword, +3 light crossbow, grass shield, chloranthy ring, flynns ring, and sword and shield ring. Think my estus was 9 at +3. Beat her down to phase 2, pillar peak and smack her on her longer cooldowns till she was real low on hp, then ran from one pillar to the other on the same side of the room to give me time to line up shots with the crossbow, 3 hits later and this 2 day ordeal is over. Not ashamed of my tactics lol!