So just to clarify.
Her son who is barely potty trained is left to roam the house for endless periods at his own free will - upstairs, downstairs, in the lady's chamber. How excellent for his development when he will piss himself and you'll shout at him for not realising he needs the toilet.
For SO LONG he can get into her makeup, potter around with it for a while, work out it can open and smear it across himself at the carpet.
He's smacked his face so hard he's bled and instead of washing his face and giving him a little more supervision she's given him a cursory wipe and sent him on his way.
He's then somehow managed to pour the ENTIRE marinade on the floor? WHERE IS SHE?!
I sometimes think I'm going mad.
When mine were potty training I was on them 24/7 for about a month. It was fucking debilitating but it had to be done - A to teach them properly and B because I didn't have the endless spare cash to arrange for a carpet cleaner whenever they had an accident.
The stair gates stayed until they were well past the toddler stage. There was one at the top of the stairs, one at the bottom and one on the kitchen door in case they came wandering when I was cooking.
When I was cooking I tried to keep them out the room, I certainly didn't have them stood on the fucking counter as I prepared a marinade. If they were in with me, they were confined to a high chair - AS H SHOULD STILL BE! Or safely on the floor/at the table.
I also knew where they were at all times. No 'silence is golden' - where the fuck is he? Essentially, her toddler was allowed free reign of a three story house completely unsupervised for an unspecified length of time.
He could have fallen from the attic to the second floor and she wouldn't have known. He could have turned the bath on and scalded himself. He could have slipped and fallen. He could have cracked his head on the bannister or a door frame.
This isn't 'you got it mama' this is fucking neglect by now. If she cannot look after him this badly then she needs to put him into nursery. He's not fucking safe.