Am I wrong for getting annoyed by this mother

I’m watching dr Phil. It’s an episode where he spoke to the mother of dulce Alvarez (for those of you that don’t know it’s a 5 year old who was abducted from a park because her lazy mom decided to sit in the car in a spot where the couldn’t see her 5 and 3 year old kids playing) anyways she’s on dr Phil showing no emotions, saying she never asked the cops for details on what they know, etc. I told my sister that I call bullshit. And that it’s her fault that her daughter is gone because she let her play in the park alone when she could’ve watched her. Then my sister said I’m an asshole