I totally agree with all those above me. That's an issue of trust. I say let the jw grandma suffer. That's called consequences of our actions. If she wants to see the child bad enough, let her do it thru the correct channels. If not, well, one more family torn apart by "shunning". And it seems, that she's taking that to extreme. If your wife gives in, she's only encouraging the JW's behavior. Like mentioned before, is your wife ready to put family ties at risk, just because the grandma doesn't want to pick up the phone. Plus, the grandma knows this has to be done secretly. Encouraging this behavior will only set her up for more sneeking around.