Is it possible your daughter has, or is developing, a latex allergy or sensitivity? Repatha injectors have latex at the tip, and are not suitable for people with latex allergies.

PS. This can develop at any time - my daughter, who has multiple allergies, developed hers after using latex gloves while working as a First Responder and EMT when she was in her teens. My friend, a nurse for over 40 years, did not develop hers until her body was experiencing other autoimmune issues.