Hash isn't like alcohol in that sense. Again, it's concentrated THC. You wouldn't "black out" but you could get so tired, you would put yourself to bed. You would forget small things, as in misplacing your keys, forgetting what you were doing, etc. You definitely wouldn't forget where you put a baby or that you are caring for a baby unless you shouldn't be a parent anyway.
ETA: Clarification after thinking about this more. "Blacking out" is sort of possible. If you smoked a lot, then yes, you could and would fall asleep somewhere but I think of it differently because once the "high" wore off, you would most likely wake up completely sober and coherent. Very different than "blacking out" from alcohol or anything else IMO.
Thank you for sharing that because I think when his high did wear off - he was sober and realized what happened . I watched a documentary once on parents who left children in their cars truly accidently. The show had a doctor /expert who explained how in certain situations, the mind fills in gaps inaccurately and that its' possible when dealing with a newborn or very young child to completely forget them when stressed or going about a daily routine that once didn't include them. One new Mom put her baby boy in the car seat and had an important meeting at work. She grabbed coffee as usual and thought she dropped her child off at daycare - until the husband went to pick the baby up and they said he had never made it there. In her absent mindedness and rush to get to work - she had left him in the car all day. The community scorned her and she went through enormous guilt as any parent would. The show documented several instances of this and until I watched it - I had always been angered by such stories. How could anyone forget a child? I could never understand it. Now with that in mind, I can see MG doing such a thing since he is not typically used to a routine with this child to begin with and could have been impaired. He may not have blacked out from the drugs but just forgot her.
I do question how he says he can't remember details regarding the hour that police want to account for (between the time he was seen in the store and the time he was captured back)....but remembers that he turned off the swamp cooler and placed EG in her play pen. He's blaming drugs for not recalling his location one hour but gives small details the next. He asked for a lawyer when pressed with questions about the missing hour so he either felt like he was being confronted/framed or that he knew the answer and at that point decided he needed representation /defending.