As if she wasn’t the one who taught him to be deceitful and secretive. And Mila definitely didn’t die in this episode. She was just pretending, because it was an opportunity to shed the Mila identity, which was too close to Enabran Tain, and begin afresh. As a former Obsidian Order operative she’d already done the same thing several times, so it was no effort whatsoever. Garak knew all about it and they found each other later on. 

Now Elim and Julian go over to hers for dinner once a week.