It is a business account and I opened another account (thru my wife's bank so that I would have a bitcoin address; however, I was told that I couldn't transfer the bitcoins because it was to another bit coin account--it wouldn't allow the transaction to take place)--now my wife sells vintage clothes and has a pay pal account (would this be an external account) thanks
Why not clear it up with them?
From what I can see, I'm not sure if it was because it's to another bitcoin address/account or because the account you're sending to is still within Coinbase.
They did say
"you may still send your balance offsite to an external address."Why don't you try sending to an address that's not with/from Coinbase and then sending to your wife's Coinbase address/account?
Although, to avoid any doubt, I suggest you clear it up with support.