I think you’re right on the mark, Nonny! It’s pretty clear by this point that Eve/Juliette still has feelings for Nick, and there is definitely some baggage there for her with regards to him and Adalind. This isn’t the first time those things have come up as problems or points of tension between Nick, Juliette/Eve, and Adalind either.
I think the spell may have made her feelings for Nick turn to an obsession and broken any filter/barriers she might have had in place keeping her from saying or even thinking about certain things, but in her unique case the spell definitely didn’t put feelings or thoughts there that didn’t exist previously.