What should the daughter-in-law do if she receives ambiguous information?

I suggest you make it clear, don't jump to conclusions about her easily, look at her attitude, and remember not to be discovered by her quietly. If she is interested, you can talk to her and get to know her, and remember that even if she really likes it, don't blame her for getting married. It takes two hands to make a decision, and even if she likes it, she has your reasons. So if she's not interesting at all, it's just the unprovoked harassment of the person who sent the message or the person who is interested in your wife. It's simple, and you don't have to intervene. She'll handle it herself.

I wish you a happy marriage and family!