My thinking on this is in line with other posters, i took what she was saying to mean consent with things like body language and recognisable noises before they can speak.

Stefan Molyneux also points out that before his daughter Isabella could put sentences together he would draw basic pictures with crayon and see if she understood through the communication means she had (corresponding drawing, smile etc).

With things like eating as well if a baby wants to feed i very much doubt that if you put the food source near the baby's mouth and let them do the rest that they would simply fail to eat.

From what i know of how trauma stays in the body and autonomic nervous systems while humans generally don't remember things before the age of two i would suspect traumas or simply stress of the parents would be remembered in the body and in stress responses from day one.

Having seen that she has something constructive to say I've found that i really don't mind her pink hair quite so much.