i think issues with her own childhood have inspired her to go so above and beyond in her generosity, service, and adopting as many children as she has.. among other things. some people channel things positively. i agree though, she's probably istp.
that's why i find her insanely attractive ... i think if she never had that compassion innate in her personality, it wouldn't 'show itself' in the adoption of kids. i think everything we are and do stems from a few, innate core traits/codes