Sad to say, Ivyblossom used to be hosted at Veela-Inc.net which was abandoned around July of last year. Until fairly recently, you could access the fics at the Potter Slash Archive at this page. lasultrix had a good post detailing what happened and why here.

Now, however, PSA is down following the Australian censorship law thingy. As a result, I don't believe they're hosted anywhere.

And now the point of my comment: I saved the fics (all three complete ones: Origins, Haven, Belonging, as well as what she published of her fourth, Quiescent) and I'd be happy to email them to anyone who wants them. If so, just let me know!