-SPOILER-
Nah, I don't think so. The Israelis are the good guys, remember you can't kill them, and you work with Shin Bet. My theory is that either she was working with Soth, or that she wasn't working with anyone specifically, but still wanted to see the virus released, cause that would bring the US over to the Israeli side (remember how she says at one point "we're on the same side. You have the same problems we have")
My guess is its the second.
Also, has anyone noticed that while on the submarine, when you hack the computer, Grimsdottir tells you they traced the signal back to Displace International, but that's Shetland's outfit. Then in the next mission, they change it to whatever the name of the Syrian terrorist group is. My guess is they just got the line mixed up, cause it makes no sense that Shetland is guarding the virus.