My take:
Faris's production on the offensive end will be more than made up by the new & improved version of Stewie playing the whole year, a return to form for Bria, and an improved and steadier MoJeff. Her rebounds will be made up mostly by Stewie. We might have somewhat lower assist-to-made basket ratio next year than this past year, but in any event we will have
more made baskets so who's counting...
Defense - here's where we will really miss Kelly Faris. There is no replacing the tenacity of this "shut down" guard. MoJeff will be better, no doubt, and Bria will be healthier (God willing) but we will still be less effective defending the perimeter than we were with Kelly. That much is inescapable. We will also have less ability to put one person on the opponent's best player and play everyone straight up.
But this just means that we will defend teams
differently--not necesarily worse (or better). We will have more opponents able to take us off the dribble, but a more experienced Stewart will be there to help in the back. That's her greatest defensive skill anyway (help D). We might even see a bit more zone next year than we're used to seeing, to make sure we are maximizing Stewie's effectiveness. (IMHO a trapping zone like a 1-3-1 would be most effective for UCONN next year rather than our usual 2-3. It would utilize the best defensive skills of our guards, who are excellent at doubling and harassing, and Stewie could occupy the middle in a high enough position to cause a lot of problems for guards as well as forwards. But in all likelihood Geno will get great defense from his favored man-to-man, with Stewie especially giving great help as needed.)