If this were true, then there would have been no point in supporting emancipation or civil rights as a white person. No point supporting women’s suffrage, even though that was passed democratically with the help of voting men. LGBTQ people do not hate allies, they hate people who actively oppose their right to exist.
I think this pop psychoanalysis doesn’t apply to questions of social justice. What Palestinians need is not just “a sense of self worth”, as if this is just a question of having the right attitude. They need rights.
OK, those distinctions exist, but I’m not seeing anything that suggests this situation has anything to do with a “savior complex” or “inferiority complex”. I don’t get any sense that this woman was a “self-righteous asshole” or that her support was hated or rejected. The idea that being strongly supportive of human rights is pointless or just serves one’s own “self-satisfaction”, as OP suggested, sounds a lot like when the right dismisses everything as “virtue signaling”.
I think she’s just swept up in a war zone. Hamas obviously didn’t attack this settlement to specifically target people like her.