Emotion - into a story

When writing a scene, there is an emotion the character will express based on how you think she should feel.

And there is the emotion the character will express based on how she should feel.

For example:

She should feel angry here but she doesn't.  How can I get her to be angry?  Well, the truth is that if she's not angry than that is how it should be.  Go with that.

Ok, so she's not angry.  She's indifferent.  Well, a reader won't be interested in an indifferent character.

Well, it's not true that she's indifferent.  The fact is that she wants to feel one way but she can't get herself to do what she needs to do to feel that way.

She wants to be someone but she doesn't have the drive to be someone.  She's phoning it in and following formula.  I want to be someone but I am a robot.