instead of a stepmom really, its a school mistress with a plain daughter and a perfect pupil
school mistress told pupil to ask the pupil´s father to marry the mistress and the pupil will get porridge with honey, father said no and the pupil cried due to the fact that she was given porridge with gall. to comfort his daughter he told her he was going to order a pair of boots made of iron and when it starts to rust he will marry the mistress.
mistress was informed of this by the pupil and told her to wet the shoes, as time went by the boots started to rust and soon the man married the mistress.
of course when the father was around at home the pupil was treated with kindness, when he was not, she was severely despised by the mistress. Mistress would tell the pupil to do extremely hard tasks but there was this one time when a cow helped her, making the mistress angry that she finished her task she was sure that cow helped her pupil do that task, ordered for the cow to be killed the next day. The pupil was crying to no end and was grieving a lot before it even happened. cow comforted pupil and told her to clean the entrails the mistress told her about
she went inside the tank which was messy and instead started to clean up a bit, a dog came in with some fairies and the dog says that the pupil did the fairies some good to them by cleaning up the tank and said that they would be at her service if anything
they notice the pupil was hiding, mentioning she was extremely beautiful and would grant any wish she would want
the pupil went back home,the mistresses daughter came back home the exact same opposite happened to the daughter from the pupil, she found a tidy clean tank, she ruined it and the three fairies said something along the lines of messing up the place and cursing her, instead of blessings and beauty like the pupil, she came back looking horrible and ugly
they saw a beautiful girl, a maiden and the daughter was amazed,