Regrets

My grandma passed away this past Monday, and I leave tomorrow to go to the funeral. She was in her 80s, and she wasn't sick as far as I know. I wasn't expecting her to die, and I am trying to let myself grieve her passing. I wasn't particularly close to her, but I feel like that there was unfinished business. It is little things like she never met my son because we live so far apart, and I meant to send some pictures that I haven't sent yet. As everyone is, she could be kind or cruel. There were misunderstandings in the family, not between her and me, but among others. I regret that she died without those relationships being mended. Is it odd to regret what you have no control over?