Please remember the difference between statistical analysis and individual situations. This is not about your specific situation, but is rather an analysis of similar situations across the board.
Adapting to the step-parent relationship is something every stepchild must do, and some have a better such relationship than others.
As the father of an adopted fourth child, I understand that the statistics might say she will have a harder time than our other three children, but I can work that much harder to ensure that she has the best possible outcome.
MortMan, good call out, thank you. I came to the same conclusion after I responded. Just sensitive, I guess, because I do take my responsibility seriously. In fact, I know I have to work extra hard at being a great dad because it’s not the optimal situation.