No options for businesses to transfer via Wills. As they are owned by the whole household rather than an individual they stay in the family by default. There's a manual transfer method I can teach you once Split & Merge is fixed. It's broken right now. That would work either before the owner's death, or after death if you keep the owner as a playable ghost long enough to do it.
I can't check from the Tartosa side right now (opening hours), but no option to Get Married in Ravenwood (it was something I asked about/requested).