For several years now, I've been saying Kaddish on my wife's behalf because she had the chiyuv to say Kaddish for her mother. Now that my wife has passed and no longer has that chiuv, do I continue to say Kaddish for her mother?
See next question.
A. It stands to reason that once one has begun and kept a mitzva tradition one should continue keeping it if possible.
Depending on the case, there may even be a requirement of Hatarat Nedarim (Absolment of Promises) recitation, if one stops.