I don't think you should explain yourself Tidy, turn it around and ask Gluezilla and sister to explain what is going on, or in the case of Gluezillas sister what she thinks is going on...
I wouldn't keep repeating myself and explaining over and over. I mean really, there comes a point where Gluezilla needs to explain HERself.
Also Gluezilla 'didn't think it was a big deal' about the decoration so why the hell is she now 'upset' ?
Put your foot down about this nonsense OP!