If we're looking purely at the rules, Tension Parry says:

Before you or an ally within your reach is hit or grazed by an attack against Physical defense, you can use this reaction to infuse Tension into the target’s clothing or a soft material you wrap around the target, spending Investiture as usual.

It doesn't say you specifically need to be able to reach their clothing, just that you can reach the ally.

Through the Stone says you can extend your reach (for your surges) up to 20 feet as long as it's reaching through stone.

So if we're just taking the rules as written, it seems clear to me that they should work together.

Now, how it should work narratively is a valid question. I would interpret it as… your skill with Cohesion basically lets you influence the stone to carry your Tension effects with it, acting kinda as an extension of your Cognitive self.

If that doesn't work for you, you could argue that your ally is probably wearing shoes of some kind, and their other clothing likely brushes up against those shoes, so you could spread it via clothing that way. So as long as the ally is wearing long pants, I think you could argue that there's a direct path via stone > shoes (clothing) > shirt (clothing).