No, she is a bitch already. I never understood people thinking that kids can't be irredeemably vile.
If you don't know anything about developmental cognition, you really shouldn't be having an opinion on matters of developmental cognition. I'm sure you're familiar with the Dunning-Kruger Effect.
A good example of how parents fuck up their kids is how around the ages of 8~14 months, babies start to develop object permanence. This just means that they're able to remember and imagine things that aren't in their immediate perception. Prior to this, they are incapable of comprehending that anything could exist outside of the current moment.
As their brain begins to develop the ability to remember things that aren't present, the baby will get confused about why the thing they're thinking of isn't here, often causing them to cry. However, they aren't able to retain that memory very well. So they begin to cry and forget why they're crying.
In response to this, most parents do one of two things. They either shower the child with affection, or they get mad at the child. Both of these are the wrong thing to do. Affectively positive social reinforcement will cause the child to repeat their behavior, expecting the same result. In other words, if a baby is crying for no reason and you shower them with affection, you are conditioning the child to act out, throw a fit, or start crying. Even if the association with receiving affection goes away, the behavior has already been reinforced and it will persist for a very long time. Similarly, it teaches the child that, if they want attention, they should act out. Because positive reinforcement means "adding a stimulus to reinforce a behavior."
And if you get mad at the child, then the child will learn that anger is the correct response to being upset while still reinforcing the behavior. Again "Positive reinforcement" does not mean "making them feel good to repeat the behavior." It means "adding a stimulus to reinforce the behavior." Getting mad at them will actually cause the unwanted behavior to become more strongly reinforced.
The correct way to deal with the situation is to simply check to make sure the baby doesn't have a real reason for crying, and then just turn off the lights and sit right nearby where the baby can see your face, but otherwise ignore them and wait for them to calm down, then show them affection when they stop crying. You want to reward them for dealing with their own shit.
Not having the things you want is just life. The baby's gotta get used to it.