✔ 最佳答案
It's fine to ask, but it's also okay for her to choose to continue to associate with that person (same goes for him, if he associated with someone who was disrespectful to his wife).
The husband is free not to associate with the disrespectful person or that person's kids, or to call them out on their disrespect if they choose. A married couple can 'ask' their spouse to start or stop associating with certain people, but they don't have the right to force it either way.
If this situation involves you, hopefully your wife will respect you enough to at least minimize their time with the disrespectful person and not expect you to spend any time around that person or their kids. She might also go as far as letting that person know that continued disrespect of you by them or their kids, will cause her to reduce (if not eliminate) her association with them, because it would mean the two of you together wouldn't be spending time with that person anymore.