"不論自己的孩子做錯多大的錯失,媽媽永遠都會在家的門前等待著"
Mom would wait eternally by the front door, no matter how serious mistakes made by her own kid(s).
或可加....令句子更完美
Mom would wait eternally & patiently by the front door, no matter how serious mistakes made by her own kid(s)