My mom died today.
How do yo feel about that?
To be honest? Relief.
Even if your relationship with your parent was difficult it is good to grief for them. Otherwise you will have a lot of unresolved feelings that you would have to live with.
I don't know about that. She and I never got along even when she was on her death bed.
You need to grieve if only to move past her. Keeping your emotions about her bottled up even after she's gone is unhealthy. You can grieve for her to a trusted friend or family member in private if you want.