Of course you can set up a bank account at a bank, such as Bank of America or some other large bank close to you geographically that routinely deals with international wire transfers.
However, as a retired CPA with a great deal of experience in these matters, I must ask you how well do you know this woman?
There are many intricate "scams" out there, particularly involving crooks located in Ghana, that have a wide variety of fraudulent activity, that on the surface appear to have little risk involved, but actually are very risky.
Just this week I dealt with a very similar scam, involving Ghana, where the "trick" was to have an American Citizen open a special bank account and the scam worked like this. The individual in Ghana, sent a check to the party in this country for $10,000. with instructions to deposit it in the new bank account. Once that check was deposited and credited to the account, the individual was instructed to send $5,000. to the "crook" in Ghana to pay for some fictitious transfer & income tax related to a death where the "crook" was the beneficiary of the estate. That's where I came in, before the $5,000 check was sent (It was all set to go & the American had second thoughts about it & contacted me to see if I thought it was a legitimate transaction). The scam is that by the time the $5,000. check was forwarded to Ghana & cashed, after another week the original $10,000. check is charged back by the Ghana bank for Insufficient Funds. The American is instructed to send the $5,000. from another personal account if the $10,000. check has not cleared his bank.
So, if I were you I'd be very careful before I got involved with any financial transactions with a party you don't really know, particularly someone in Ghana.