Thank you for your question.
An important consideration in the case of a senior who may wish to report an abusive situation is that, very often, the abuser is a family member or someone they are close to. That can prevent them from reporting the abuse or limit their ability to do so. Something else to keep in mind is that seniors are sometimes afraid to speak to police and get involved in the justice system. Involving the police can make the situation seem more serious and real for the victim, making them feel that they wouldn't be able to take it back afterwards if they wanted to, because it would be too late.
However, we know that, before involving the authorities, seniors often talk to someone who is close to them or a friend. A good idea would be to take the necessary actions to raise widespread public awareness of elder abuse. That way, should a senior confide in their neighbour, for instance, about how their son was treating them, the neighbour would know how to respond and what to say. That, alone, would be an excellent first step, one that could help the victim feel more confident and prompt them to take the next step, knowing that there is help.
Another option might be to focus on the relationship between the victim and the abuser, perhaps by bringing in a mediation expert, who could help defuse the situation before it got worse.