Is it a passive aggressive way to get back at you for not going?
I saw that sort of nonsense and felt the same way as you with my ex. It sounds like a way of sucking you down to her level, I fell for that for a while. Eventually I made the decision that I would be happy on my own, no matter how she felt. It short circuited the cycle when I simply went and did my own thing and was happy about it no matter her childish and petty mood swings surrounding the cult.