Answer:
Amy has Selective Mutism
Step-by-step explanation:
Selective Mutism is a lenguage disorder that is diagnose when a child knows how to speak, but has difficulty doing it in specif cases or circumstances. For instance kids with this disorder would speak to close relatives, but not to everyone in their classroom.
Selective Mutism is clasified as an anxiety disorder, that manifests with silent kids not being able to talk.