I will be preboarding with my mother coming up. We will not be walking to the back of the plane since honestly that's going to delay open boarding even longer at the speed she moves. Of course, if the OP wants to deal with getting her on and off the plane feel free to take over.
I hope that Kevin never has an ailment that makes it hard to walk... or if he does he meets nicer folks who don't think that forcing a handicapped person to walk even farther so the "judgment crew" can sit up front treat him as he is treating others?
(Kevin, unless you are totally wheelchair dependent you walk from the door of the plane to your seat on SW and most airlines!)