I have a character- but the story?

this might sound stupid but it just came to mind. maybe the aunt feels a little guilty about wanting to get rid of her even though she hates her. she's shopping one day and overhears some classmates of the girl saying bad things about her. then she goes home and she's puttering around in the kitchen and she thinks to herself, 'yeah, she really is a little bytch.' and she thinks more and more about what she heard and believes it more and more as a way of feeling less guilty and then she gets herself all worked up and decides she has to get her out of the house today, she can't wait any more. so she packs up all the girl's stuff and calls around to find a place for her to live. and she's all set with her plan to get rid of her. and as soon as the girl gets home from school she's going to tell her and drive her to her new place and dump her. then as she's cooking something she starts a fire in the kitchen and it's in flames and she's screaming and she can't get out. and then the girl rushes in and pulls her out and saves her. and her aunt is in the hospital for a couple of days with minor burns. then she gets out and at the girl's school people find out about what happened so she has one day where eveyone is really nice to her and the kids all want to talk to her and be around her. and she goes home and her aunt is nice to her. and then she goes up to her room later that night and just decides on the spur of the moment to leave. thinking, "I had to save someone from a fire before these people could accept me? I don't think so." so she packs a few things and goes downtown and catches a bus and goes off by herself. and everyone wonders where she is and at first they're sad and concerned about her. but after a few days, they say, 'oh well.. she was weird. we were right about her. good riddance.' and they're glad she's gone and they start saying nasty things about her again.