My parakeet died... how can I deal with this?

I found my parakeet a little over a month ago, outside at a parking lot. He seemed like a baby still and was very untame. I took him home, fed him and gave him water and we became best friends from then on. I spent like 12 hours a day with him, watched movies together, ate together, dlept yogether pkayed together... he quickly picked up my kissy sounds and started to copy it. He made kissy noises whenever he saw me, was hungry or lonely. It was his way of getting my attention.

I had work 3 days in a row so I left my budgie with my mom so I can spend the nights at work and not have to worry about him. On the third day, my brother called and told me that my bird is dead. He said mom tried to make him a pretty "home" out of a big cardboard box with plastis on top that has holes in it. Then she went to get her hair done and my brother went to work out and when they came bavk they found my bird dead.

I don't even know who to be angry at. I know my mom's intention wasn't bad but I miss my budgie so much... ive been crying over him all day and I keep looking back at his pictures and recording of him... it makes me remember what a great friend he's been to me and how much I miss him. I feel like I'm slmost becoming depressed over this.... please help... how do I deal with this?