I think you'll find her lack of faith in Zionism troubling.
Why would I find an investigation into war crimes troubling?
...and I don't see anything about Zionism there.
What she should do, however is call for an investigation into Hamas' war crimes and sanctions against those who support Hamas terrorism through funding for that purpose ie: Iran, and support UN actions to root out Hamas and any other muslim terrorist organization operating in the region. Remember, they are the invaders and colonizers. They are the occupation army.