It's a personal decision. My parents have both passed away. My moms sister and I had a blow out fight 6 months after my mom died (10 years ago) and haven't spoken since. I still have all my pictures of her stuffed in a box in the basement. I have no positive feelings towards the woman, but she is a part of my life history so I keep them. I would recommend storing them out of sight for a while and making a decision when you don't hold that anger.