Better, but it still needs work.
You need to check your grammar for spelling and capital letters in words. Also, make sure you use spacing, especially after full stops, and paragraphing. This applies particularly to your roleplaying section, where speech should generally be on separate lines.
As for Isanella's backstory, I would consider it a combination of being too dark for the MLP universe and too random to be associated with the character. Murder and insanity are subjects that are difficult to integrate into a character, so are often best avoided.
Finally, you need to look over the Character Creation Procedures in the Rules, as there is something you need to include from it.