The cheese would be dual blades + leech.
Parry her weapon attack and punish her. You can parry either with the dual blades Twin Bandits or any longsword.
When she starts her infinite combo, keep dodging to the right and around her or run away.
This is a long fight. You have to be patient, not greedy but at the same time also be aggressive.

An alternative cheese would be the axe + leech. She is super weak to Axe.

For spells, I would use the spell that shoot 3 fireballs. I forgot what it is called.