Access to a deceased person's icloud backup?

I had access to all of my mother's passwords. After she passed away, I backed up the contents of her ipad and then re-set it. I don't have the ipad anymore. I thought she and I had all the same photos in our shared albums, but now I suspect there were photos in her library that I do not have. Can I see them without going through a whole backup/re-set/restore/repeat on my own device?