Inter-Family Adoption

That is exactly why I don't agree with the idea of "don't bring it up until the other party does." Too often, both sides are left afraid they might be "pushing" something on the other. It will leave you with all kinds of issues growing up, but don't draw away from it just because of the idea that "other families need children more." At this point, it is your sister's (and the father's) call. You may have to risk some possible last minute rejection, but I believe it would be worth it. (Though only you can decide that for you.) It is possible she would draw back, only to want the adoption again in a while. I pray you have wisdom in all this. Brad