She will kiss her betrothed husband and tell him that she knows it doesn't work, but that's the very thing some witch will try one day because everyone knows it and then that it won't work.
Hmm -- the flower in the woods is too unusual -- marrying doesn't work when there are three of them -- chopping their heads off bugs me and would end the story too soon.
Kill the witch then.
I suspect I'm going to have to decide whether this is the same witch she met earlier. She would at least have to disguise herself if the witch is the same. Then I have to set up the death, whether she falls from an enchanted bridge that is two-thirds disenchanted, or gets shoved in an oven, or drowned in a flood. . . .
Fortunately she has three animal companions to help her. PLUS a magical helper. (BUT -- did she not get changed because the witch didn't realize she would be one of the party? Decisions, decisions.)