I'm a shit mom, literally💩

This sounds terrible, but in the middle of the night if my daughter poops I don't change her. She has never had a diaper rash once, and honestly I think the poop calms her down somehow. 
She'll be fussing and then she poops and instantly she's asleep. It's like magic idk why it puts her to sleep to be laying in her poop but it does. Now I guess a good mother would wake her up to change her, but me being a shit mom, I just let her sleep. Of course first thing when she wakes up I get her clean but it's never super bad and she never has a rash or anything. She just likes to poop and pass out...I figure she's happy and asleep, and it doesn't irritate her, so just let her keep sleeping. It's only ever for 2-3 more hours anyway and has only happened like twice. 💩😬