from the interviews she describes herself as someone who thinks alot and is prone to overthinking. She also mentioned that she neglected to inform her family that she was being honored on the walk of fame. This is consistent with Ti-dom Fe-inferior
ISTP or INTP?
I don't think any of the interviews demonstrate either function decisively, but she also describes how she detaches herself mentally from a situation. This seems to rule out Se to me, since Se is the most in the moment, here and now function. Ne allows you to go 'elsewhere'. I'm fairly sure she is INTP. For the lack of Ne, for one thing it won't be fully developed at her age. Also INTPs tend to shield it and act more reserved when they are in unfamiliar company (like an interview). It would be interesting to see how she acts around people she is comfortable with.
And fwiw many of her mannerisms and ways of speaking are similar to my INTP gf