Paula, I am sure you are not alone in this and it must be a relief to admit it. However, as always in life, we sometimes need to make compromises.
You have the courage to admit the problem, now look for solutions. Could you cope with seeing her for a day every couple of months alternating between your daughters house and yours. It would only be six or seven times a year, so should be bearable.
Do you keep in regular contact with your daughter? Perhaps doing that on a weekly basis and asking about you GD and seeing photos will also enable you to seem interested without contact. You do not say how your DH feels about seeing his GD so little.
Life is one long compromise in so many ways, surely you can cope with this one.