I placed a bounty on this question and it's coming to its end.
As it is there is no question that really answer my problem, even if one provides a beginning of an answer.
Should I award the bounty to this one or just let it wear out?
I have a mix of suggestions for you in this scenario.
Bounties actually get awarded automatically (at half value) after they expire if there's an answer eligible for the automatic award. You can read about that in the bounty FAQ under the heading "What is automatic awarding?".
Answers are eligible for automatic awarding if they were posted during the bounty period and meet one of these criteria:
Currently that means Wannabe Warlock's answer will receive half the bounty value (25 points) automatically when the bounty expires.
Since somebody is going to get it, you might as well award the full value to somebody.
I also recommend the following caution:
Assume that nobody at all might actually read the bounty. If you're lucky, they'll at least read the reason you chose: “The current answers do not contain enough detail.” They may not keep reading to actually read the message you wrote out (it's easy to miss). Assume that most people will only see the point value of [+50] and try to provide a super awesome answer to the question.
I say this because the information you requested — “how much resources the confused creature is supposed to spend, if any” — isn't actually requested in the question itself. It's a request for new detail. People will miss it.
In this scenario, you're asking for extra/deeper detail, and the best way for you to get it is ask a new question entirely. In that one, link back to this What does a confused creature do when it has to "attack the nearest creature"? and say you want to know to what extent the confused creature is meant to use up their own resources. If you hadn't posted the bounty yet I'd suggest editing into the question (it seems in line with what it's asking for), bolding it, then posting the bounty. Right now though I recommend asking a new question primarily because it will give you the best chance of learning what you want to learn, and it's distinct enough from the basics covered in that question to stand on its own as a non-duplicate.