It's amazing what you can find YouTube,by chance I saw the title of this short film and decided to give it a look, I was speechless I could not imagine how they managed to do something so good with few resources.
This is clearly influence with German Gothic,The effect of Gothic fiction feeds on a pleasing sort of terror, you have the castle the ghost or in this case a monster, also a lot of influence by the works of Edgar Allan Poe, this was shot in Mddelton Towers giving the story a distinctive Victorian side,you can also compare it to a hammer horror film comparison comes from the colorless of the set mostly dark and gray colors,the protagonist of the story Tilly played majestically by Holly Jacobson i wish her a long career after this, uses a White nightgown making it leap over darker tones in the set making her look pure almost angelic.
The other character the step mom (the stereotype that stepmothers are evil in all stories)the make up they used made her features exaggerate looking like Glenn Close would look if she was a witch, then the monster, He looks very grim and menacing as the Green Goblin should have look in Spiderman (2002), overall the story is well told, like all good short story is near the end, very well acted if they can see you are not going to disappoint