Sorry there is some background to this.
My mum committed suicide a few weeks ago. We weren't close and it's been a strange one to deal with. I posted about it at the time.
My mum left no will so everything she owned went to me and my DB. (DB wasn't close to her either) So we have shared her money 50/50. Her house was bigger than DBs so DB and his family are going to live there and sell his house and he said he will give me some money from the sale.
We have sold her car and plan to sell most of her stuff.
So me and DH have been saving for years to take our 4 DCs on a holiday of a lifetime to America we had about two years left to save before we could go but with my mum's money we can go this summer.
So we have been planning it all Disney for a week, 3 days in Florida 3 days in New York.
So we went to see PILs today and FIL wants to take all the family (SIL1 + DH + 3 DCs, SIL2 + 2 DCs, our family and PILs) to the other end of the UK that FIL used to take DH and his sister's to as children. He has wanted this for a while. He has wanted this for years so we are going there too.
So we told PILs about our Disney plan and not to tell the DCs yet. They said they will look after our dog for a few days. SIL1 was also there she said we couldn't go on holiday twice in a summer. We said of course we could. She ask were we got our money from. I said we were using some of the money my mum 'left me'
She said that it was disgusting to use my mum's money when we weren't close and I should save the money for the DCs if I had to do something with it. I shrugged her off and basically said I could do what I liked with it. She said I was just behaving like a spoilt child.
The DCs do have savings otherwise it would be different.
But am I being unreasonable to use the money for a holiday?