So with your determination that this characters issues need to be in Mind, what can we do? How can we keep from twisting Dramatica to suit the story while also making sure not to compromise the story by twisting it to fit Dramatica?
If you’re positive that you want your message to provide a first person perspective on an inequity of Mind, what can you do to the story to make that happen?
Do you have a clear idea of what conflict occurs because of her need to be believed? If so, can the story maintain that conflict if the source is slightly adjusted? If not, can dealing with a need to be believed become the conflict that comes from some clearer image of what she thinks (Everyone thinks I’m a liar, and that leaves me with a deep seated angst and the feeling that I need to be believed).
If those don’t work, can you take a different perspective on “needing to be believed”? For instance, if “needing to be believed leads to X conflict” works too much like Physics or Psychology, can you as author step back and say that it’s the MCs belief that she needs to be believed in order to achieve something that is creating her problems? Because she believes that she needs to be believed, she spends her time trying to convince everyone how truthful she is instead of getting work done. Because she believes that she needs to be believed, she refrains from telling the stories of all of her outlandish experiences that would impress and inspire others to do great things.