I wonder how much Edward may have told Kitty about Laura....I don't think he would have told her about Laura's supernatural side, but then again he and Kitty have been friends for quite awhile, so maybe he felt the secret would be safe with her.
No, Edward wants to marry Kitty for her money, so he's trying to make the Collins family look like a safe investment. Apparently he couldn't avoid having her learn about his cousin the vampire, but, to misquote from The Importance of Being Earnest: To have one supernaturally nasty relative may be regarded as a misfortune; to have two looks like carelessness. So all Kitty has heard is that Laura is dead. Otherwise she wouldn't have said anything to Nora about her.
A couple of years ago, I made a comment in the Watching Project along the lines of how much more natural Maggie was with Sarah than Vicky was. Today Kitty was stiff and unnatural with Nora. Nice job by Kathryn Leigh Scott - aided and abetted, of course, by Denise Nickerson's famous stone face.
Julia's such a familiar character that I'm charmed by the image of her as a mystery woman who appears out of the blue and then vanishes, and who may well be responsible for the strange things that have been happening to Kitty. I don't think we get any more investigation of her by Edward and Kitty, but I'd like to. But why didn't Julia's clothes go back home with her? I suppose she showed up there in her 1897 clothes. Professor Stokes's monocle might have dropped out of his eye if he had seen Julia naked, carrying her 1969 clothes.