Trying to wrap the 2x4 but the nails are sticking out, sorry. Jeff, if you don't want your W there ok. Disregard the rest of this. If you would like her to drive you and be there then don't lay down and be passive on this issue. Talk to her. I mean really talk to her. Ask her to sit down with you, no kids no tv no computer. This isn't just about getting a ride for a biopsy. There is more involved here than calling your W or calling a cab.
Live your life while you are still living. Riding the trail less traveled.