You do not know she threw her values out the window. You know she is publicly hedging her views.
I doubt she would gain many votes by supporting Palestinians. Republicans, Schumer and other Democrat Israel-firsters would try to cut her if she took a pro-Palestinian position, so it is best she keeps any pro-Palestinian views to herself for now.
Nothing good for the Palestinians is going to happen in D.C. unless progressive Democrats dominate. Republicans and neocon, neoliberal Democrats will need to be voted out. That won’t happen in this election. Let’s get in who we can.