The setting looks promising, and I already got a taste of terror after reading the first story elements (I picked the daughter first, though I misinterpreted the doors as "diverse", "male" and "female"). Sadly, the glitchy and slow movement quickly broke the immersion for me. It seems like the different sprites for "walking sideways" and "walking up/down" have a mismatching offset. Can be observed the best with the daughter.
I don't know if I've seen everything, but father and especially mother had a very short part. To improve the story you could add in some interaction between the characters. Although a lot of tension and suspense can be invoked by just hinting that there is a danger but you don't know for sure, I think it would improve immersion and plausibility if you showed (some) of what happend. Let the play do/experience the "happiness".