Songbird, I see your point.
This seems to me like an author printing a beta version of a book and giving them to some people to read. The objective here is to show the work and get attention, so when its final version is effectively published there will be people interested. (Note that AFAIK she didn't ask for comments or contributions, it was all to show her work and create some hype).
After some time our author decides to cancel the project and removes the stand where those copies were before, freely accessible, replacing it with something else.
I see no ethical problem on the ones that already have those copies sharing them privately with some friends, unless the author specifically asks for not doing it.
That's different from setting up a public place to display and share that work, even if that place didn't make any money. In this situation, and considering the author attitude, we can imply that she doesn't want that kind of public display happening anymore, or else she would have left the copies there for anyone interested even knowing the project was cancelled.
By the absence of any statement in the line of "I don't see myself in that work any more, and I don't want it shared in any way" my understanding is that she doesn't care (unless, I presume, someone tries to make money on it, or sets it on a page for everyone to see)
TL,DR: I think there is a grey area here that allow us to admire and show that work in an ethical way, unless stated otherwise (see catbirds post on the topic) and as long as it is done in this small corner by a limited number of people.