My grandpa died a few months ago and I'm not sure my nan is coping. She depended on him a lot and has made comments such as "I'm struggling today" on a few occasions. I've told her it will take time and me and my sister are going to see her as much as we can but we both have other things going on in our lives and can only realistically get to see her a couple of evenings a week each. How do we decide if and when it goes from 'normal' grieving to something she might need to see her doctor about?