Why would fiancés female coworker friend like pictures that my fiancé put up of us when she knows I don’t like her?

She knows that I dislike her. My fiance put some pictures up of us on Instagram. She liked them straight away. Why would she do this when there is friction between us? I feel like she’s trying to annoy me on purpose

Why would fiancés female coworker friend like pictures that my fiancé put up of us when she knows I don’t like her?
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