if your child does not like or '痴' the helper, you should pay more attention. Children only '痴' someone who is good to him/her. If the helper is spending a lot of time but she still does not get the heart of the child, their relationship must be something wrong. The helper may not treating the child well.
I hav experience before. The very beginning, the helper was good to my daughter. They love & care each other so much. A year later, the helper does not treat her well; my daughter started disliking her.
I don't mean the helper is not taking care of my daughter but she just lost the heart. All the children can tell at once.