"Guilt"
Ainsworth knew nothing of the original Ainsley's future, but she thought the baby would still live a good life even when she became a puppet family head.
Maybe, in the future, she will break free and live her life freely. Perhaps her future is bright, and the Sloan Family also doesn't decline.
Ainsworth knew nothing of the future, indeed, but she knew one thing.
She basically robbed the original soul's future by replacing her.
Ainsworth bit her lips and sighed. She carefully looked at 'Ainsley', the body that she occupied and her sigh deepened.
"...yes, I feel guilty. I come out of nowhere and take your body."
Ainsworth thought that the baby in front of her was the original body's soul, and they met by fate or because she went into a coma.
After all, Ainsley never fell into a deep coma before.