Have I made the right choice?
No one can tell you that. Only you know how you feel and what you want to do.
This very time last year I went through the same situation with my mum. I was with her all the way myself until leaving her the night before the morning she passed away. But I wouldn't/couldn't see her after she passed away. Others went down to see her and said she looked totally peaceful etc was good to hear, but me personally, I didn't wish to see her after she'd gone, and so I didn't. I'll never regret it 'cos it was just something I couldn't face and she would have known that anyway.