Soft as Silk?

I finished my needlepoint project and am waiting for the yarn to arrive for my oldest granddaughter's Owlet sweater. A new pattern has become popular at Knit Night and I pulled some Done Roving Grapevines Pure Silk from my stash to make the Willow Cowl (here on Ravelry), a pattern designed to require only one skein of sock yarn.

Well, I thought, why not silk? I love the colors! The finished cowl is intended for a gift, but there is one problem....this silk is not in the slightest soft. In fact, it's kind of scratchy.

So I'll finish it, but if a soak in SOAK doesn't soften it up, it will be mine instead of my friend's. A scratchy cowl would be kind of an unfriendly gift I think.