I really enjoyed the relationship between the siblings and felt like the emotional background for them was written very well. I can understand how they've grown so close and are always there for each other through thick and thin. I found Erin and Todd's relationship progression to be believable enough. What kind of threw me was how late Ben was written into the relationship. It was Todd and Erin for so long, then the idea of adding Ben came up and then all of a sudden it was "Todd, Erin and Ben 4EVER". I just found that part was rushed. But, once they did decide to let Ben into their relationship, I really liked how Ben straight up asked them what this would all mean. I've read a few menage stories where I never felt like they all really talked about how this would work outside of the sexual aspect.
One other issue that bugged me was that I found all the males to be a bit overwhelming, almost smothering. I get that Erin had been through a lot and was still going through a lot since her daughter's murder but for the love of all things chocolate, I wish she had some more breathing room. I think there were maybe two times were she argued with Todd to back off and I wanted a lot more of that. First her two brothers, then Todd, then Ben and even Ben's brother Cope - it just seemed like too many characters trying to take care of Erin at the smallest hint that she may be in distress. Give the girl some space! Heh, how's that for some criticism: the characters are too caring! LOL
This was my first book by the author and I liked it enough to read the others in the series.