Greetings! I'm getting back into cycling after way too long out of the saddle, and I'm bringin' my wife with me. I'm working on getting her bike dialed in. Fit is looking pretty good, but I'd like to increase the distance between her feet to reduce stress on her knees. The issue wasn't obvious with platform pedals, but with clipless pedals (Crank Bros. Candy SLs), the issue is more pronounced.

The Crank Bros. cleats don't have adjustable width. I could imagine customizing the cleats to widen her stance on the bike, but I think that might be a tricky modification. I'd prefer to find a longer pedal axle, or a longer bottom bracket axle.

The crank on her bike is an inexpensive cotterless crank, and the bottom bracket is an old-school cup-and-bearing (rather than sealed) design.

Suggestions? Thoughts?

Many thanks!