My family wants to meet the family of the girl which I attend to marry. The girls family told us that they dont want to meet yet because we are currently in the mourning days of martyrdom of Hazrat Fatima.
Is it forbidden or makruh or anything like that to have such a meeting? Is there any rule or guideline for this situation?

It is not haraam to meet on such days but in respect of these days if one waits then it is better.