ScOut, I agree with you. Someone should ask her, and the right thing is to respect her option.
However she had all the opportunities to express that option, and did not use it. She could post on hummingfluff, prior or simultaneously to her new message, what is her opinion. Or somewhere else. So far all we know is that she cancelled the project and decided to pull it out of her page. It's reasonable to interpret her attitude as "I don't care".
There's also context. Sharing one pic is different to share the whole archive. And how it's done is also important. Someone posting her work without permission on a Deviantart page would be wrong, no doubt. Having a link inside a Forum that, as she's well aware, used to discuss that work, as a kind of memorial, I don't think is wrong, unless she specifically says so.
We are "inside" a space dedicated to discuss that work, not "in the open" on a place with thousands of visitors per hour. It's not the same.
So my understanding is that, unless she says otherwise, it's not morally wrong to have that kind of respectful and somewhat restricted sharing among us.