As usual, it is an interesting dynamic when one partner expresses that they have had enough. It causes the other to not want to lose them.
I wish you much success in your discussions this weekend. Remember to use more "I" / "Me" phrases instead of "You" phrases.
I suspect there really is not she has to bring to the plate other than to not have hidden conversations with other men and to open up more with her libido and affection towards Lan.