In the given particular sample, it's hard to say without seeing the original whether the lack of a silvery quality was due to paticular batch of her platinum, or due to discoloration of the paper itself over time from improper storage, or simply an artifact of copying a print under unbalanced tungsten lighting, and scanning the duplicate uncorrected. But in the case of commercial digitized copies up for sale, those are often tweaked at a whim, and likely have lost some of their subtlety unless done via a exceptional quad press. Then finally, you've got the downsampled drift for web purposes like Bing. That same Bing page has a Steichen on it too, which stands out like a sore thumb - I don't mean that negatively, but due to sheer dissimilarity of personal style even given the same nominal "pictorialist" genre of Steichen's earlier years. And then there are also some modern simulations of her style.
There is no doubt that she was way deep into the cloying pre-Raphelite genre then in vogue. But she did it with such exceptional acumen that she basically transcended its corny stereotypes. ... and darn near broke her rich husband with her platinum purchases. Of course the fact that she ran in the circles of British high society and photographed some very famous people attracts collectors. But the highest price I recall ever being paid was for a print was of her own household maid.
But back to topic, Cameron was NOT a soft focus lens type at all. She deliberately de-focussed standard lenses of the time for just the right amount of "glow". It was done under window light, and of course those lenses were uncoated and not fully corrected like modern ones. To a certain extent, flare and edge rendering got married. I have often deliberately done that too, but in pictures where predominant areas were still in acute focus with precise textural rendering. I call those my "near death experience" series - leading the eye from some cavernous setting filled with dark yet discernible details toward a brilliant glaring diffuse light. I used RR tunnels, old military tunnels, mine shafts, dark barns, cave openings etc. It becomes a play on confining deep sharpness versus a burst of total unsharpness. Fun project, but I've moved on.
Yes, I have fun doing it - I'm not an illuminati Steven. I'm actually a hillbilly who literally grew up with cowboys and Indians. About as close to I get to being a Renaissance Italian is the spaghetti I ate tonite.
When you get to a quite different 18th C example I also mentioned - Watkins - he made lots of his income catering to western tourism fare. My own family has boxes of his mass-produced Stereopticon images, along with an antique red velvet lined Stereopticon viewer. None of that is worth much. There are lots of views of Yosemite, equivalent to all the postcards AA later sold there and elsewhere. His personal mammoth plate work was of a much higher order. But most of it was also destroyed during the 1906 SF earthquake and fire. So what remains and gets displayed is often on loan from private collections and in somewhat bad shape in terms of mildew foxing and so forth. But once in awhile you see something reasonably pristine, which informs you just how able an albumen printer he was. So people like him knew their own tools exceptionally well, but were proficient enough that it didn't become a secondary impediment interfering with their vision itself. It was a means to an end.