Graduation

So I have just finished university and will be graduating soon, however, I am stuck on who to invite. I am only allowed to invite three people, however, through what is kind of a long story I have accidentally invited four: my best friend, my sister, my sisters husband, and my 3 year old niece. So I need to tell one of them they are not invited and I don’t know who or how. I’m not overly close with her husband so it’s not personally important to me that he’s there but I think my sister might not want to control a toddler single-handedly in a quiet ceremony. I could uninvited my niece as she won’t know what’s even happening but then my sister has to find a babysitter and I just generally want her there. It might be simpler to uninvited my friend so I’m not inviting half a family and also I feel bad making my friend sit with people she doesn’t really know for a while, but I also really want her there. Any advice is welcome, thank you.

So I have just finished university and will be graduating soon, however, I am stuck on who to invite. I am only allowed to invite three people, however, through what is kind of a long story I have accidentally invited four: my best friend, my sister, my sisters husband, and my 3 year old niece. So I need to tell one of them they are not invited and I don’t know who or how. I’m not overly close with her husband so it’s not personally important to me that he’s there but I think my sister might not want to control a toddler single-handedly in a quiet ceremony. I could uninvited my niece as she won’t know what’s even happening but then my sister has to find a babysitter and I just generally want her there. It might be simpler to uninvited my friend so I’m not inviting half a family and also I feel bad making my friend sit with people she doesn’t really know for a while, but I also really want her there. Any advice is welcome, thank you.