Separation anxiety disorder is most likely the reason why the child who does almost everything with her mother would get to be very anxious in school.
Separation anxiety disorder is a form of mental health disorder. A child or a person that has such would display a lot of worries whenever they are away from their families or those that they are very close to.
People that are like this often have fear of something bad happening to them while their family is away or something bad happening to their family.
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