Yeah, I'm sorry to hear about your friend, too. If you aren't comfortable riding the area (even at a slower pace than normal), walk it. You'll get back to it in your usual fashion ... back to baby steps. That may seem rather symplistic ... I'm a beginner, but sounds like it would help.

Have you talked with your friend about it? How does she feel about getting herself back on a bike when she's better? Is it an area you gals can walk to together? I'm just tossing out questions as ideas. Keep us posted on your progress.