Her older sister was living with us for about a month and due to her attitude and mental health issues she returned to her mothers family. Maybe the loss of her sister is why she is doing this. Of course she was doing it some while her sister still lived there. She used to be so good and now if she is good at school she comes home and is horrible. I mean she throws tantrums and runs from me if she does not get her way.
Perhaps it would also be a good idea to find out what she is upset about it isnt normal behavior ,she is expressing frustration /anger at something and directing it at herself...The Teacher has obviously realised this .Has she older siblings does she have anything happening that would upset her, a Family split? .