Dog passing away

So recently my dog got ran over and the person didn’t even stop to check, probably cause they were on their phone and they were speeding as well. Right now I’m having a hard time processing all of it cause I saw it happen to her and I just keep thinking about it. I just keep replaying what happened in my head, I’m trying my hardest not to think about and just remember all the good times and memories about her. She was so playful and a ball of energy and happiness. Everything happened so fast, it was unexpected, we did bury next to my moms roses and ever since she passed I’ve been going to talk to her and just say good morning and good night and just talk to her as she was here with me. I know she’s in a better place and I did get to hold her while she was passing so she passed knowing I was holding her. But I just miss her so much and she’ll always have a place in my heart.