EMILY: Your father and I were shocked and upset … You didn’t give us five minutes to digest the news … You simply dumped it on us and walked out. I hardly think that’s fair.
In fact, Lorelai attempted to give them the news about Christopher briefly and undramatically. Emily insisted on dragging all the details out of Lorelai so that she and Richard could attack her, then Richard went off in a sulk. You can’t really blame Lorelai for not sticking around for any more.
It is Emily who is not being fair at this point.
The Annotated Gilmore Girls 