She didn't say anything so bad. I believe even some Modern Orthodox consider it permissible to socialize with Gentiles of the opposite gender.
Now, to the issue of Arabs with Israeli citizenship, a population culturally more linked to neighbouring Arabs than to Israel, what can individual Jews do? Treat them rudely just for being Arabs? Even if they wanted to leave, which country would receive them? Arab countries would not receive them because they have an Israeli Passport.