It's rude not in include family in important events.
Leanne is getting married and has just realized that there are too many people on her guest list.
Leanne wants to trim her guest list.
Leanne chooses not to invite some friends that she is not very close with.
Leanne chooses not to invite her aunts, uncles, or cousins even though she has a good relationship with them.
Leanne is able to celebrate her wedding with the people who know her best.
Leanne's family are angry at her and family tensions arise.