This looked like a promising story... but it didn't deliver on its promise. The editing was flawed, as was the writing. The premise was a slight twist on very used plot lines, but the originality was abandoned early in favor of churning out a copy of many other poorly written pieces.
Maybe, though, it's just me... I wouldn't say that this story contains one of my squicks, so much as it violates one of my beliefs about stories and/or writing. Frankly, any story which contains the word 'taboo' more than once needs to be rewritten, IMABCO.
Now, for those who are such devotees of incest stories that how well written they are is a secondary concern, I would recommend this story. For those who enjoy, but don't know a great deal about, MMA this is possibly going to interest you. Those searching for great writing, I'd suggest they look elsewhere.