yeah, it's awful. I was aware she had passed away before that point, but I wasn't sure exactly when, how much they had before she went.
it was so unheimlich - at first, I though it was odd that they were using the old "I wish the Lord would take me now" line. then I realised it was actually the very same take of the line.
it only dawned on me slowly that they had superimposed her head on someone else. it looked odd, unreal, but the thought was so unlikely that my mind wasn't accepting it as a possibility until I realised there were no moments in that scene shot side-on, and I ruled out any other possibilities.
ruins the episode, really, but I suppose they weren't prepared for the episode and had to work around her death. some good stuff in there - especially Tony watching the old James Cagney film - but it breaks the suspension of disbelief entirely knowing that the episode is a workaround.