Last month, last year, whenever. (If you are not sure what's going on in Haiti, here is CNN's latest report on the recent earthquake.)
Perhaps some will plead ignorance in the face of her questions--you may not have known much about the Haitian 'standard of living' (if that term is not too grand) or even been aware of the little island nation. I for one can make no such plea; World Vision has made sure that I'm familiar with such places and such needs.
Check out Rachel's post, and take her questions seriously. Haiti is not the only scene of such poverty, and Haiti, along with the others, is not going anywhere. These issues will be important for Christians long after this earthquake is forgotten.
Also, here's an old post of mine dealing with the Christian response to poverty.