My cockatiel died very suddenly last night. We were chattering to each other, she loved talking to people and was a sweetheart, which is why we named her SWeetie. But while I was chattering with her, she suddenly started jerking and fell to the bottom of the cage. I freaked out and yelled for my mother and Sweetie just lay there jerking for a efw seconds before she died. She had been in good health and relatively young, only about 8 or 9 years old, we just can't figure out what happened. My mother suggested that it could have been a heart attack, because Sweetie was always a bit high strung, but she was very relaxed and happy while we were chattering. My brother was a few feet away, playing video games, and barely looked up the whole time except to tell his friend to ignore me and my mother hysterical crying over the bird. His friend kept asking what he could do to help and got tissues for us. We put her in a shoebox with her mirror and bell (her favorite toys) and buried her this morning. My brother says we overreacted and that we should have kept the toys for another bird, but I would have felt horrible trying to give Sweetie's favorite things to another pet, I don't even want to get another bird now.
Did my mother and I overreact? Was it really stupid to bury Sweetie with her toys? Was my brother just being a dick about it? What even happened to Sweetie? He's already talking about getting another bird to 'replace' her, how do i get it through his skull that you can't replace a pet like that and that nobody else even wants to get a bird right now?