One of her prophecies was about the year 2004. Perhaps she had a premonition of her own death...from Spirit Daily:
"Especially now we get the question about the year 2004, which has been mentioned, in a certain way, by Venezuelan seer Maria Esperanza. I'm not sure what she has told others, but I know what she has told me: that 2004 will be the beginning of a 'new light' from Heaven.
What that implies is anyone's guess, perhaps even Maria's.
I took it to mean that God is sending new insights to us and that these will arrive both supernaturally and through various events that in future years will lead to introspection."