We will both be at a mutual friends big birthday this weekend. Frenemy is so-called as has the appearance of being super-sweet in front of others but lots of "jellyfish stings" that seem to go unnoticed by others. One of those people where you come home feeling worse about yourself and your life choices than before you went. Sadly cannot avoid her at this upcoming event as we are both part of a big group who once shared a hobby hence invitations. DH coming too and will have my back but any tips?