They likely suspect she created her own injuries, which is common, and/or that he was the real victim.
http://A-Daughters-Story-Of-Abuse.dads-house....
http://Speak-No-Truths.dads-house.org

Domestic Abuse Helpline for Men and Women
http://DAHMW.org
http://DAHMW-FaceBook.waits4u.com