So, the first thing of course that struck me is that Ethan is 36, but has a 19 yr old daughter. Given that pregnancy lasts 9.5 months, he pretty much got a girl pregnant at 14... Maybe 15 if he's about to have his 37th birthday. That in itself carries a lot of implications. It generally isn't the smarter kids that end up with underage pregnancies, so perhaps that's why he's so sure Selene won't have heard of any of his work as a writer - he's possibly not too bright. Unless there's some very solid and central reason to these specific ages, add a couple of years to the MC's age to increase the gap by at least 2 years. A 14 yr old baby-maker in a country where high-school ends at 18 is too big a deal otherwise to just be background.
Overall the writing is fair, with only a couple of small signs that English might not be your native tongue (or perhaps merely that your own origin is in a more slang-using social circle). Telling us that the wine 'costed' a lot was the clearest one. In English the wine would cost X amount, and after purchased it did cost that amount - no 'costed'. Don't think I have ever heard the word costed outside of business planning where they talk about "getting a project costed".
Honestly, I think your biggest challenge will be in pacing, which is always a challenge in any story with a mystery element. You have to bear in mind that a player/reader is often as familiar with the same sources that inspired you as you are. Also, they are aware that it is a story, and thus that it has a plot, etc. So as soon as that maid is trying to make Ethan leave, we've already worked out that these people are those whom 'pregnant girl in white dress' was fleeing from.
When Selene tells us that she has a brother, there's already a part of the reader's mind saying "Yeah, and if you invited us to a party with your husband and your brother, there's be only one guy there, right?". Pacing the story so that any 'reveals' are actually still revealing is one of the hardest things to do. Too slow and the story is frustrating, like when watching people do really stupid things in a horror movie. It's one reason that so many stories feature a particularly smart or experienced lead character, since that way anything revealed too soon is simply that the character is that smart as was ahead of you...