This is human nature!
In the face of enough financial gain, taking risks becomes as simple as eating and drinking. After all, what's the big deal even if something happens? At worst, one will be thoroughly exposed, that's all. There's no life-threatening danger, so what's there to fear? In the worst-case scenario, one can just flee abroad to live it up—it's not like you'll die. There's nothing to be too worried about.
But Rose's approach was very simple and resolute, "My donations are meant for real work, not for you to go on tours using public funds for leisure! Whoever dares to abuse them will be immediately cut down. You might have the life to embezzle, but you won't have the life to spend it." This method was enough to deter that group of people and ensure the donations were used properly.