Child Account in Apple Music

My toddler has her own Apple ID which is part of our family shared Apple Music subscription. She does not have her own iPhone. Is there any way I can set up her account on my phone so that she can use Apple Music without screwing up all my playlists? You can do this for virtually all other apps. If there is, they sure make it hard to find. If there isn’t, what an unfathomably stupid decision.