I was recently in the same area as my mums family; had my five year old with me. I’d arranged to call in.
They offered me a drink; fine, lovely. Then decided they were going to make fish fingers, chips and peas for us. I tried everything to stop them! I explained numerous times we were doing to a restaurant afterwards, dc was quite looking forward to it, but they just ignored us and we both ended up with an unappetising meal neither of us wanted 
Why do people do this? I’ve known others like this who just don’t take no for an answer and give you food you don’t want. Pretty much the entirety of the visit was spent with me trying to get them to stop them making food for us so didn’t even get to chat.
AIBU? I don’t think I am, but …