>>150201511
No, an interspecies relationship would still be considered a taboo in the movie's setting. The characters in the movie acknowledge that the love they feel is an awkward matter. She was allowed to fuck a bear only after she became a bear.
I suppose it was the only way to allow Kenai to experience romance and live a full life as a bear. If he hooked up with a human woman, it would be bestiality. If he fell in love with a female bear, it'd be weird because he's secretly a human instead of a real bear, so it might technically still count as bestiality. But since it's another human who gets turned into a bear, at least their situations are equal.