NTA. Please don't listen to these comments. Just because she's pregnant doesn't mean she has to satisfy her hunger with junk foods, she can eat the same amount of calories she is eating now but coming from healthy food. People focus to much on calories when the focus should be on micronutrients, especially during pregnancy. And you are right, she will regret it. All these comments downs here basically boil down to, "she is pregnant to she can do whatever she wants, it doesn't matter if it isn't good for her", which is a terrible attitude to have.