MIL has organised an 18th birthday dinner for my DHs DD and the entire family ....except me. I have a good relationship with my in-laws, but have never met DHs ex (they were never married but had two DDs together). We regularly see the girls as they stay with us whenever they like. We often have them for xmas, holidays, birthdays (fair enough tailing off now they are getting older). DH and I have been together for over 11 years, also have DS 3 and DD 8 together and they absolutely adore their sisters and vice-versa. I have no ill feelings towards his ex and we have never even spoken to each other let alone seen each other. Just don't understand why MIL is meddling - why doesn't she let the parents organise their own DD 18th. TBH I said to DH tonight if he and his ex had suggested a celebration dinner for just the four of them I would've completely understood, but for MIL to organise dinner for entire family minus me seems a bit much. Oh and another thing MIL wanted to invite ex to our wedding as it would've been nice for her to see her daughters as bridesmaids?! I'm feeling a bit hurt TBH but perhaps being unreasonable?