SL
That is exactly a perfect example
The husband brings home unannounced guests constantly and the wife is tired and doesnt want to serve all these extra people all the time and maybe the food budget is tight and maybe she just wants family time once in a while and thinks when the husband brings home the guests he is ignoring her in favor of the guests, Or just brings home guests to irk the wife because he knows she hates it (All possible scenrios , I dont know specifics) and it irks her.
She decides she wants a divorce as the husband is not listening to her and goes to the Dayan, The Dayan says that is no reason for a divorce and in fact they are doing a Mitzvah and she should stay with such a Tzadik that he loves Hachnasat Orchim. The Dayan Probably just didnt get it that its more than Hachnasat Orchim going on here