Hi Mumsnet.
For some context, my mum died of cancer when I was 15 and my sister 10. My dad got with a woman after six months who was not nice and never tried to get to know us (they broke up for a week once when I was about 16 and my dad said "of course she always resented the fact that I had you two" then got back with her). He was loving but very often angry (now as an adult diagnosed myself I can see it was unchecked neurodivergent rage) but he has made many decisions I will never understand.
He paid for my uni trip to new York when I was 19 (about £800) and I lost my passport just before so couldn't go. I was cursing myself and so upset but he was furious and took my sister to Venice without me, to "teach me a lesson".
Now I live 300 miles away from him and sister which is not ideal, I miss them very much and sister often makes the journey up and stays for Christmas every year. I've recently had a baby and she has met them many times but my dad only three. He missed DCs first birthday because he had come back from bali 3 days before and didn't want to make the journey.
Now he and my sister have gone to Berlin together, without asking if I and baby wanted to come (I don't expect anyone to pay for me but he is well off and retired, and took 40k off mine and my sister's inheritance from our maternal grandmother to pay off a car he'd bought). I recently went to the Cotswolds as DH's uncle has a house there and asked my dad if he wanted to meet up at a bird park to see us and DC. We were an hour away. He said he was having lunch with his brother. He could do that any day.
Now both my dad and sister are sending me photos of them in Berlin. I've had one holiday abroad in ten years and am feeling a bit left out, more because they're spending time together than anything else. AIBU?