I fully understood the point and was reiterating my own, which is that she could have stayed out of trouble by lying. I was neither condoning skipping school nor saying that what the school did was unjust. If you look at the post I quoted and what I said before I related the story about my sister, I clearly said that telling the truth was a good thing and that the boss probably appreciated the honesty.
I then related a story on the opposite side of the spectrum, where instead of being appreciated, telling the truth actually got someone into trouble when lying would have kept that person out of trouble. My comment at the end was mockery of the situation in which telling the truth got someone into trouble when it usually does the opposite.
Twik, that's not like saying that at all. My sister wasn't getting detention for telling the truth, she obviously got it from not being out of school for a certified reason. The point I was making, was that regardless of the circumstances, telling the truth caused her to get "caught". Using your example, that would be saying, "I could have said that I didn't steal the money, and not gotten into trouble, but they caught me because I told the truth."