When my sister died, my surviving sister and I reacted in entirely different ways because as different people we grieved in different ways. My parents grieved in their ways, that were different again.
My deceased sister was buried near where my parents lived and they visited her grave. Frequently at first, but tailing off so that it was just birthdays and Christmas.
My surviving sister and I visited rarely. Not because we did not love and miss our sister, but because the essence of her, did not dwell in the handful of ashes in a dull municipal cemetery, but in my mind and my memories, in the little things of hers that still dot my home. Although as we are currently downsizing, I am parting with things of hers without a pang, it is over 30 years ago,
I remember my sister in all sorts of little things. I see her in my grand daughter, my sisters great-niece, I see her in my daughter. All three have the same distinctive small hands with beautiful slender fingers. I remember when I hear the music of Mozart.
Anyone particular remembrance ritual does not define someones grief or loss. You still want o visit your DD's grave. Keep doing so. For your daughter, for your daughter this is no longer meaningful. Let it be and do not judge her grief or memories by one gesture.