You seem to have got the wrong end of the stick, jeremy - as usual. We are all prone to failings - some on a low-level, such as getting unjustly angry but not violent; others on a higher-level, such as getting unjustly angry and violent; and still others on a far higher-level such as getting unjustly angry and murdering someone(s).
That some people do what we regard as bad things, either deliberately or by the result of them taking insufficient care is human artifice: and then there are the unintended accidents. This is just human behaviour.
All those failings (which of course also includes your example of rape) were not in the original plan for humanity, but are now there.
Not much of a plan then: poor quality control too - else your 'plan' is just religious superstition/myth.
We generally pray for people and situations when things have gone wrong, so that we are asking God to provide help in such a situation, be that in the form of another human who is willing to listen to or advise someone, to treat them or to encourage them.
That you can do of course, and no doubt with good intentions, but this activity occurring isn't confirmation that there will be consequences that can be directly attributed to these prayers.
Whist your question is a valid questiuon, it can be very difficult to know just how many people have been encouraged and/or taught how to avoid letting the more destructive tendencies that humans can exhibit take them over. For instance, we don't know just how many people who have a tendency to rape have managed to control those urges as a result of their faith in Christ or a discussion or listening session they've had with someone sent by God for that purpose.
Not only do you not know 'how many' - you don't know if there are any at all without some method to identify any divine intervention.
I've no doubt that people seeking to change aspects of their personal circumstances might well find positive involvement in religion, and the support of others that follows, and that this may well support them in making lifestyle changes etc - although some may not benefit so it would be important to know about the failures too. However, this type of response involving focused group support isn't just a religious matter, where there are many non-religious organisations dealing with a range of issues that work using a similar ethos.