My sister nannys this 3 month old and says the.mother is crazy.. The baby is chuncky for 3 months so…

My sister nannys this 3 month old and says the.mother is crazy.. The baby is chuncky for 3 months so the mom thinks its ok he only gets 2x2 oz bottles for 8.5 hours. She wont wake up and pump at night because it "bothers her rest for her work scheduel"... she thinks formula is.the devil but really!!?!?! 4oz for 8.5 hours?!?!? couldnt a baby get dehydrated?! My sister asked the mom about it and she doesnt seem concerned but the baby cries all day from STARVING.... My sister mentioned this amd the mother said "clearly hes not starving.. hes a chunk"... oh and nothing against cloth diapering but this woman doesnt clean them appropriately and it stinks up the house and she will let her infant stay in the same onesie for days... sje also has a 2 year old who thinks its ok to run rampid because the parents try to reason with him rather than deliver their expectations... the kid will literally slap the mother repeatedly in the face while the mother is saying "talk to me about your feelings.. are you angry? is that wjy your hitting mommy?"... wtf?!? amd they want my sis to go to their parenting seminar... these people are crazy... i encourage breast feeiding and cloth diapers and natural parenting... if you dont half ass it!!!! thoughts?!?