Louise can be potentially boomerang for Kate scheme

All of Shadow master within Kate circle show extended care for their doll but Louise. She seem harbor ambition to be prominent in the house, her care to Lou is questionable itself when Kate revealed the truth to everyone she was the only one who silent the author closed her inner monologue we cannot know her true feeeling.

It might possible she developed a resentment toward Kate for hindering her dream to rise up in the house.

I fear for one day Louise will choose her self interest ambition over Lou and her friends.

The day seem is near.