SiL is going away for a working holiday tomorrow for 4 months . I'm actually pretty gutted I will miss her terribly we are very close . Or so I thought anyway . I found out tonight she was out for a farewell dinner with my sister and my cousin (they all sort of run in the same circle - with little sub-groups iyswim) . Actually miffed isn't really the word I'm actually a quite hurt . I don't think she would have not asked me on purpose I think she just didn't think to ask me which makes me very 
Genuinely don't know if I'm being oversensitive and dramatic being upset by it .