Time Capsule from Macbook to Macbook Air

I've backed up the drive on my sister's Macbook to a TC, and now I'm trying to take that back up, and restore her profile (and all its contents; photos, videos, etc) onto her fiance's Macbook Air. I'm not entirely sure if this is even possible, but he's asking me the favor of doing this for him. The Mackbook was originally backed up using Ethernet Connection (which disabled all wireless functions on the TC) and seeing as how Airs don't have ethernet, I can't connect to the TC as of now. If you understand my goal in this whole thing, I'm simply asking you for help. Thank you