Hi there. I think the lady did the right thing. My Husbands family have never accepted me, and he wants to be buried in the family graveyard, many miles from where we live and a place i cant return too .I would allow the family their time with him and just stay where we have our happiest memories.The body is gone, so to speak, but the memories remain and i will do exactly as your cousins wife has done.My Husband feeels very close to his family, especially his sister, and i would wish to acknowledge that, but also i would not wish to be where i am not wanted.
Best wishes to a very brave lady. xx