A lot of the time, an older adult is reluctant to disclose what's happening because the very person who is abusing them is also the one they rely on for the basic necessities of life, so they're very guarded in terms of revealing what's actually happening. Unlike in children's abusive situations, where you can call children's aid, there are really no adult protective services that you can pick up the phone and call and someone suddenly swoops in and changes what's happening in your home.
We need to be a bit more concerted in our efforts of reaching out to older populations and supporting them while they deal with these issues.