I don't think so, because I believe Missy was targeted. If it was a contract killing, however, the perp could kill again, for fear of being exposed.
IMHO
But if she was "targeted", wouldn't the question still be:
"Why"? (Why, her) For example, what if this person went after, a "blonde". (How do you know this person might "not" go after, another "blonde".) (Or say, a female did this case and it was over "jealousy". What "might" happen, if the perp ever becomes "jealous" over some other gal.) I believe this person "could" kill again. [But I guess the real question would be: "Will" they (ever) do it, again.] (And I would not just look at cases that occurred 'at' a church, either. Because, it could be possible that: It occurred there for the reason of: That is where "she" was going to be at.)
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If this was about (or, 'more', about): This person wanted to play a "cat & mouse" game with Police [looked for a place, where they would BE on "surveillance camera video"] (you see what they are wearing), why not break into a place where you could (also, at least, "steal" something. Make it more, worth your while.)
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(Whatever the case may be), look at this:
If the perp knew that there WAS "surveillance cameras" at this church (There is a sign outside that stated there was),
then they knew (before then went there), that:
Police
will be looking at this surveillance camera video.
(after I do this.)
You see what the person is wearing.
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Taunting, Police?
(cat & mouse game)
&/or,
a "wanna-be" cop?
("and", cat & mouse game)
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Is it "both":
(The intent was to kill Terri Bevers)
"and"
(The intent was to,
play a cat & mouse game, with Police.)