Months ago I heard her being very outspoken against ISIS, I thought maybe she was someone we could bring to our side, since she is NO fan of Hillary Clinton, heck I dont even think she is a fan of Obamas..but she supports Sanders so there ya go..you can’t take the Commie out of the Communist
She wouldn't have much of a career in Hawaii politics as a Republican, and if she did become a Republican, she'd be more hated by the right as a RINO than she is as a wild card Democrat.
As it is, what she's said against Hillary is valuable because it comes from somebody in her own party. It would be easier to ignore coming from a Republican.
The accepted story is that she endorsed Bernie because she disagreed with Hillary and Barack about foreign and military policy. She doesn't seem to be that into the rest of Bernie's agenda.