I faced my own personal dilemma after my Mother died in March of 2007. While she and my Dad did not disown me for joining the LDS Church, they were not happy about my decision. My Mother, in particular, made sure that she voiced her opinion strongly from time to time. She told me once that she was afraid I would give all the money I received from her estate to THAT Church. And she made it quite clear she was not interested in being Baptized a Mormon after she died. Even though I tried to explain the idea of having the right to choose to accept the ordinances performed for our deceased, she was still adamantly against it.
So, I always wondered what I would do after they were gone. Would I respect their wishes and not do their Temple Work or do it anyway?