My mother-in-law asked me how to borrow money from her.

You can consider various ways to see which one is more acceptable to you.

1. Chat with your mother-in-law and try to lead the conversation to the fact that she borrowed money from you. Don't talk about money directly, just talk about the matter itself or the result of the matter. Remind your mother-in-law that it is time to pay back the money she lent you.

If you don't have much money or can afford it, forget it.

3. Analyze whether the mother-in-law deliberately refuses to return or forgets. Deliberately not returning, it is estimated that there are her reasons, you can refer to the second way. If you are forgetful, refer to the method of 1.

4. If your mother-in-law doesn't return it on purpose and you don't want to ask her directly, then tell her husband that he will be the middleman to understand the reason and solve the problem.