Plus one situation. Please help!!
So this is a bit long a complicated so please bare with me. My fiancee and I are getting married in august and it's going to be a very emotional day as my mum passed away only a couple of months ago after a year long battle with cancer. we've been planning and sending out invites and we sent an invite to my cousin and her partner but in the last couple of weeks he has broken up with her. We still have given her a plus one but have asked if her plus one can come to the evening as we would like to invite people we know to the day and we do not know who her plus one is. We asked the same of my fiancée Brother and sister who were fine with it. but when I asked my cousin she replied saying she was going through an emotional time and didn't want to be alone on the day. (but she will be with all the family and friends) and then said if she didn't get a plus one she would then NOT come to the wedding. i was annoyed and upset the fact that she said that as it seems she has completely forgotten the year I have been through and the fact the one person I want more than anyone to be there, won't be and she turns around and says that. there are no plus ones in our guests to the day as we wanted it so we know everyone but plus ones are more than welcome to the evening. Am I being wrong asking her plus one to the evening??