Gertler and Miller are both Jewish last names, although Miller can also be a Christian name (must have been converts or something). I haven't seen any real evidence that she has any real relation at all to Russia. Maybe she had Ashkenazi ancestors hundreds of years ago who were in Russia, but more likely they would have been in Poland.
Your comment is unbased, not redpilled, dumb, and cringe. I'm also going to be rude in my response because I doubt you're going to change your mind anyway, if you're set on defending/covering up for her for some reason. I know that talking about anything related to Js in general (if not in a completely positive light) tends to cause NPCs and the demon-possessed to critically malfunction. Probably if you're a J you don't want her associated with your group because she's embarrassing. Much easier to let her do her Russian LARP or pin her for sure as an "inbred Anglo" (interesting how it's perfectly okay to defame White gentiles as inbred, but not Jews--there's your hypocrisy again).
By the way, it's possible that she is British, Jewish, and happened to be born in Russia and then went back to England the next day later, but I just don't believe it. Based on her last names I don't believe she is Christian either though. Maybe she is part of a Christian family but I doubt it.