I think trying wider bars is a smart idea. Also, if the pain is unilateral, it can come from an uneven arm length, so have them measure your arm length and if they are different adjust the brake lever placement accordingly. Also, be aware there are many different bars out there so you may want to try them first on the trainer to find one that feels good, not just in width, but reach, depth, amount of curvature (i.e. ramp), ergo bumps vs smooth,etc. I personally like the nitto noodle the best cuz it has a short ramp and is very smooth, but many women on this board really like the salsa poco bar, which is a short reach bar with ergo bumps.