No you're not abnormal I still have stuff of my mums 12 years on,and at Xmas ended up in tears over a Xmas carol she used to sing.I think there will always be times when we still miss them.I think maybe your general unhappiness is making things worse right now because she isn't here to talk too.Only you can decide about your relationship but if you search your heart you will know what your mum would have advised.