This movie has a young blonde wife pretending that her older husband in a wheel chair is actually alive, but h is actually dead and she is using him as a puppet and pretending he is alive.

Dead Silence? Here's a plot snippet:

....After killing Jamie's father, she hollowed out his corpse and used Jamie's father's corpse as a puppet to lure him back to Ravens Fair....

(does this picture look familiar?)

Pictures & Photos from Dead Silence - IMDb