Q436

As a DM, I'm working on a trap I think the Wilder in the party is going to walk into, but after giving it some thought, I wanted to ask...

The basic idea is, something jumps out of the shadows to try and gank the surprised party member who (I suspect) will have wandered in alone. The damage will be done as non-lethal damage for various reasons.

However, the Wilder always (or close enough) has "Shared Pain" active between herself and her psicrystal.

Since a psicrystal is a construct, non-lethal damage does not affect it...
I suspect it WILL be under the effect of a Vigor buff, but how does share pain work when one of the subjects is immune and the other is not? Will it simply act to halve the damage done to the Wilder, since the psicrystal will always be able to hold up the connection?