1. Make sure that the signs are there (noticeable physical trauma such as bruising or cuts, irregular emotional swings/withdrawals, any new hobbies which might seem off, etc.)
2. Report it to the appropriate authorities (usually the police.) Unless you absolutely know (and have proof) that the individual in question is being abused, make sure to explicitly state that you only suspect abuse. It also helps if you try and make it clear to the individual that something is going to be done about their problem, if they have one, just so they know.
