What does Ultima say about meddling into the fate of other people in Bless Me, Ultima?
Ultima warns that when one person alters the fate of another unpredictable repurcussions and responsibilities often occur in the life of the person who changes fate.
This warning is given to Antonio's grandfather on the Luna side when Ultima comes to save Antonio's uncle. Antonio's father is also warned when Ultima is called on to help Tellez when his house is beset by ghosts.
The negative potential of altering or manipulating fate are not made clear in the novel, with the possible exception of Ultima's own death at the story's end.