First off I want to say that playing this game was a beautifully haunting experience, how the narrative unfolded through the letters of friends and relatives was simply brilliant. Considering that it only took me about an hour to complete I'm impressed with its overall presentation. On the downside the mechanics were not readily apparent at the beginning but can be figured out through logical deduction. Also, I experienced a couple of bugs midgame where Tikvah would hold onto an item (the egg basket and milk pail if I remember correctly) and wouldn't release it. She could still pick up other items and use them but the item she was stuck with was unusable until the next day. Okay so unto my topic, I noticed a few things about the game which might hint at its setting:
1. "Tikvah" is a Jewish name (it means "hope" right?)
2. Judging by the outfits of Tikvah and the mailman the game takes place in Eastern Europe
3. The segregation of Tikvah's community from the rest of society as hinted at in the letters (I might be reading too much into this one)
4. Was that ash falling from the sky in the second to the last day?
If I'm guessing correctly your game is either set during the the Holocaust or is inspired by it. If so this makes your game even more impressive as the Holocaust, being such a sensitive topic, is difficult to portray in a medium such as video games. If it is about the Holocaust then I would say that you handled it in a very respectful and dignified manner without lessening the horror of that particularly dark period of human history, thank you for the experience and kudos to you sir.