Here's the problem with measuring type soley in terms of the four dichotomies: everyone wants to think that they're an ENFp.
Sister: ENTp
What she thinks she is based on MB tests: ENFP
Friend A: ESFp
What she thinks she is based on MB tests: ENFP
Friend B: ENFj
What she thinks she is based on MB tests: ENFP
Hmm...I think I notice a pattern here.