Question on the intent of the Psychopaths need to destroy

Yes can you believe I have a question? lol trust me I do will never know all the answers to how these predators think - maybe some of those that were involved with a true path can shed some light on this question.

I have thought about this quite often - We know to "conquer and divide" is a common tactic of a psychopath; to isolate their victim and have them solely dependent on them. Do you believe there are some psychopaths that do not want to push their victims over the edge in fear that the victims that DO have support systems in their life such as family and in my case my husband and children might figure out what happened and would come after them? In other words, they simply do not want the hassle in their lives knowing they were the cause of some victims total break down and/or verge of suicide - not that they would personally care in any way their victim suffered because this is what they pride themselves in - to basically see others suffer.

These psychopaths take HUGE HUGE risks in the damage they do; its a particularly dangerous game to predate on a lonely, abused married woman - as many married women who have fallen victim to them have come forth and confessed to their husbands what happened and have gone on to counseling and have saved and rebuilt their marriages. My x path had a GF (oh of course he claimed the relationship was not good) but I often wonder how he would like himself exposed to his live in GF and what he goes around doing to unhappy married women?

So I wonder if the smart paths are very very careful to not push their victims over the edge and know when to stop and let the victim go?

Any takers on this theory? Would love your input