It will not hurt to mention your suspicions to her family. There may be more to this than meets the eye.. Hurting her spouse may curtail the violence, but it could also escalate it; and allow him time to hurt her in non visible ways. Please call a shelter for advice, but I agree with Kendall, if you know other adults in her family tell them your suspicions. The more people that suspect and know that there is a problem, the more likely it is to stop the violence. Good Luck. Yours, Aye. Dave