1) Now that you have clarified how the wedding is important to the story, (In the first logline attempt it wasn’t clear) I would take a look at main character’s goal.

Is her goal to “Avoid his wrath” (I assume you mean the pagan god)
-or-
is her goal to “save her fiance'” (Or her town)
-or-
Is her goal to “destroy the pagan god” (and possibly save the world)
-or-
is her goal to “destroy the witch that cursed her fiance”

I only mention this because, “avoiding his wrath” doesn’t seem that compelling a goal for a logline.
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2) If the ‘big bad’ of the story is the pagan god, I’m not sure you need the witch in the logline. I would just say “When her fiance is cursed,” instead of “when her fiance is cursed by a witch”

If I am wrong and the main antagonist is the witch, then I would change the end of the logline to reflect that.
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Hope that helped.

I like what you have done so far, each logline attempt has made the story more clear. Good luck! love the concept.

Saying both,”Heist gone wrong” and “set up” in the logline seem repetitive,

I would stick with one or the other in order to cut down he word count.

How about this:

“After her boyfriend’s heist goes wrong, a naive gangland girl must unravel the truth behind what went down if either are to get out alive.”

Hope that helped, good luck with this!