An amateur writer with stories jammed in their head, but doesn't know how to write them!!!!

To people who are reading this, i have story ideas that you may wish to write that i can't seem to write myself. 
first story: i called it 'Mirror Demon's Duty"
it is supposed to be about a mirror demon (name it Re; please!) watching over a town and comes across a mother and her young daughter; he thinks nothing of their existence but it wonders why they are important to each other. One day the mother catches an incurable illness and is due to die within a month. the mirror demon watches as the mother grows weaker and the daughter suffers and cries. the mother finally dies and the daughter seems dead inside. The mirror did not like the feeling it got from this event so it goes to the room of records to find the life history and personal information on the mother in the demon world. he studies this for years and then when the daughter is in her teens her 'mother' reappears at home. the mother is the result of the replication the demon performed after his studies; so he is the 'mother' now(somehow through the replication, the demon's body turned human). he acts just like the mother and fixes the wounds  in the daughter's heart from the mother's death. soon everything is fixed and the mirror demon completes the contract he made with the unconscious mother's soul. the mother's soul is transferred into the demon's human body with no memory of the transfer and the demon vanishes, leaving a small guarding demon to look after the family. the daughter sees the demon's face only for a moment before her vanishes and she understands what brought her mother back. the end.....yeah i have weird stories in my head.
anyway, the contract with the mother consisted of:
'if you let me live your life and fix bonds for a while, i will give you my body to use as your own to live on once again to be with your daughter. i will also give your family and future generations a guarding demon'