She begged the governor to be merciful and to spare her life.
Advanced English Dictionary
+adjective 1 ready to forgive people and show them kindness: a merciful God + They asked her to be merciful to the prisoners. 2 (of an event) seeming to be lucky, especially because it brings an end to sb's problems or suffering: Death came as a merciful release. See also-MERCY
Random quote: The road leading to a goal does not separate you from the destination; it is essentially a part of it.: Charles DeLint