Misha's character sheet is done and she ended up being a sorceress. Her backstory was closer to the archetype than a wizard or witch.
In summary, her father was an Eladrin elf living in the feywilds alongside fey. Well those fey are completely out of control and took this elf against his will in order to form a liaison between the races of the feywilds and the material plane that wasn't bound by seasons or had any of the drawbacks of fey such as their weakness to steel and iron.
This new being would then have the best of both and would go fourth to conquer and subjugate the material plane for the fey.
Well he was taken unwillingly and unconsciously and would be completely used in the process, his full essence would be incorporated into this creation but as an act of thanks the fey let him see this creation, his daughter, for a moment before his soul would be consumed to further boost her potency.
In that moment of clarity this elf realized what was happening and in the final effort of his life he cursed his own soul to cause any creation to turn against the fey, reaping only sabotage and destruction to their plans.
Of course they saw right through this and countered the curse immediately before ripping his essence from existence to use for her power.
Well Corellon, the god of the Eladrin, took umbrage with this and reinstated the curse without the fey's knowledge. Furthermore twisting this offspring's nature to not only dispise the fey, but work against them any way she could and set it to trigger once she came of age.
Corellon knew that if he harbored ill will against the fey it would lead to a war that the Eladrin would lose, so he placed all his concentrated will against the fey into this child leaving himself free to accept the fey's lies and forgive them for their heinous act.
The fey marveled at their creation, a half-fey half-eladrin with an exceptionally strong magic well. They of course had no intention of raising this child and brought it to the Eladrin under the pretense that an Eladrin took advantage of a fey noble's daughter and was executed for his sin.