Simple: it didn't happen.
If Terri dies in the next week, that's God's will too. It is also God's will to tally this grevious murder to the sin-account of those responsible. They are storing up wrath for themsleves against Judgment Day. Or perhaps they will turn to God later, greatly magnifying His grace shown to such heinous transgressors (and we, by the way, are no better in potential in our own black and wicked hearts). That's not for us to know.
What is for us to know: a Christian can only defend Terri, an innocent woman, and here's why: God's revealed will is "Thou shalt not kill" (Exo. 20:13). God is His OWN spokesperson in this case, and the commandment is very clear, black and white.
Soli Deo Gloria
You think if God wanted her to come home he wouldn't call her?