Would it be considered a divorce if the husband said to his wife's mother, "خلصيها خلصيها وأنتِ طالق" (Deal with her, deal with her, and you are divorced), if he intended to address the mother and did not intend to divorce his wife?

If you address your wife's mother with the words: "You are divorced," and you do not intend your wife by it, then no divorce occurs for your wife. However, if you intend your wife with these words, but do not intend for the divorce to take place, it nevertheless occurs. The questioner must mention all circumstances of his question to ensure the accuracy of the answer.