I understand.  Worry about antisemitism is a good guess, and some of the replies in this thread are alarming, too say the least.

The woman I mentioned is someone I know pretty well, and I don’t think she thinks I am antisemitic.  I’m a liberal, too.  (Well, she’s “progressive,” and I’m “liberal,” but it’s close enough for this purpose.)  The worst thing about me, from her perspective, is probably that I’m an atheist, but she knows that’s not the same as being antisemitic.

I think maybe the reason she feels insecure is that being so pro-Israel is the one way she is out of step with U.S. (“woke”) progressives, a group that she very much wants to part of.