After recruiting Primrose, visit him and ask about Nursula.
AIKO will express approval of the plan and recommend that you and Primrose visit Nursula together.
Visit Primrose and tell him that you're ready to begin. He will suit up and join you to confronting Nursula.
When you make your pitch, Nursula will not seem inclined to help. But you find a possible angle by appealing to Nursula's desire to act without oversight. You are then given a choice.
You can appeal to her sadism and offer to give her "important patients" to work with
You can appeal to her lack of purpose
You can offer Primrose as a "gift".
Regardless of your choice, Nursula will agree to your bargain and will become a willing member of AIKO's plans.
Dialogue will change depending on whether you are AIKO's avatar, servant, or slave.Â