Every person who does something wrong wants to avoid a public light shining on their misdeeds. It really does not matter if they are a perfectly logical, nearly sociopathic type who only cares about avoiding punishments, or if they actually feel some sort of guilt at some level for their criminal behaviors. This is even more the case when it concerns a crime that is committed against a person who has little to no ability to defend their own best interests. In the case of the care takers of geriatric people, there should be a sense of honor and integrity by default. Unfortunately, there are a multitude of care taking people throughout the world who think that their status grants them some sort of special right to being neglectful. In some cases, they even permit themselves a level of cruelty that would shock most people. These people typically know they are wrong, and show signs of not wanting to get caught.
One of these signs is that they do not like to talk about specifics of the “care” they administer. They will usually find it much easier to simply speak in general terms, if they even want to talk about what they do at all. In some cases, the guilty parties will erect a sort of “cone of silence” around what they are doing. The less most people know about their misdeeds, the better off these disgusting excuses for care takers will be. Getting caught abusing the elderly would result in serious problems, after all.
Another sign that a guilty care taker will often show is that they will have inconsistencies in the stories they do tell. Often, these are well rehearsed lies, with some overt corroborating evidence to add some legitimacy to them. But in other cases, they will end up being self contradicting at the first serious cross examination or bit of critical thought. At this stage of the game, a person who is innocent will be defensive if they are accused of wrong doing. But a person who has something to hide will try to deflect the blame.