Some more facts have recently been revealed ...
She just got off a 15hr shift, she parked on the fourth level of the apartment parking area, she lived on the 3rd level and went to what she thought was her apartment (even though it had a red welcome mat outside the door) put her key in the lock and the door opened, she thought the man was a burglar in her apartment and shot him twice, after she shot him she realized what she did wrong.
I think she'll get a year at the most