In-law conflict is nearly always a couple problem wearing a parent costume.
The parent is the occasion. The actual problem is that the two of you never decided what your rule was, so each of you defaults to the rule from your own childhood and is then genuinely baffled by the other’s reaction.
The mechanism
It usually runs like this. A parent does something — arrives unannounced, comments on the children, expects you for a holiday, offers money with strings. One partner experiences it as normal, because it is what their family has always done. The other experiences it as an intrusion.
Then the argument happens between the couple, about the parent, and the person defending their family feels attacked while the person raising it feels unsupported. Both are right about their own experience.
Nothing is resolved because the actual question — what is our rule? — never gets asked.
The agreements that prevent most of it
Each of you handles your own family. The single most protective rule available. You speak to your parents; they speak to theirs. Not the more assertive partner handling both, and not one person delivering bad news about the other’s family.
This is also the hardest one to follow for people who are close to their parents, because it means being the one who disappoints them.
Decide as a couple before consulting either family. If a parent’s view can reopen a decision the two of you have made, the decision was never actually made.
Agree what leaves the marriage. Not secrecy — a boundary. A difficulty reported to a parent while it is still live acquires a permanent audience. Parents remember conflicts long after the couple has moved past them, and it colours how they see the marriage for years.
Decide holidays in advance, annually. Most holiday conflict is a scheduling problem that has been allowed to become a loyalty test. Sit down once a year, allocate them, and inform everyone.
When a parent is genuinely difficult
Sometimes it is not a couple problem. Sometimes a parent is unkind, controlling, or treats one partner badly.
Here the rule is the same but the stakes are higher: the person whose parent it is has to be the one who addresses it. A partner who has to defend themselves to their in-laws without their spouse doing it first will eventually stop bringing it up, and that silence is more corrosive than the original behaviour.
There is a Jewish consideration here that people feel acutely. Honouring parents is a serious obligation, and it can feel as though setting a limit with a parent is a violation of it. Jewish sources take both the obligation to parents and the establishment of a new household seriously; how those are balanced in a specific case is a real question and a rabbi who knows the family is better placed to help with it than a general article.
Where families come from different Jewish backgrounds
Expectations about family involvement vary enormously between Jewish communities. In many Sephardic, Mizrahi, Persian and Israeli families, parents are part of daily life and expect to be consulted on significant decisions. In many Ashkenazi-American families, adult children operate with far more distance.
Neither is right. But the couple needs to name it as a difference in family culture rather than treating one side as intrusive and the other as cold.
More on this in Dating someone from a different Jewish background.
The repair when it has already gone wrong
If this has been an argument for years, the useful move is usually to stop arguing about the parent and go back to the missing agreement.
Not “your mother should not have said that” but “what is our rule about this, and what will each of us do next time?” The first invites a defence of a family member. The second is a question two people can actually answer together.
The Family & In-Law Alignment tool builds the specific list for your two families. If the same argument keeps recurring regardless, Marriage Reset coaching is where that pattern gets interrupted.