I am very very sorry, I do not have good news. This was and is a scam. The addresses she gave you are false and with a service building. The name she has given you was false as well. In fact her email address and user name has been reported to other sites as scam addresses. The lawyer she gave you is also not real nor his address. These is a Olalere O Lekan, but he is dead, and this name has been also associated with Nigerian Scams.
These con artist search the Internet to find people looking for relationships then build up a trust with them. Then there is always some emergency that they need money for. Often it is the I was arrested line. It is one of the more popular scams.
These people (And I will say people as more often then not they are men posing as women) change screen names, email addresses and phone numbers quickly to prevent being tracked down. Money Gram is the easiest way for them to get their money and will often request this or Western Union. Though in a bind they will sometimes accept checks.
I am sorry, I know this is frustrating and hard right now........but do not send them anymore money. You will not get this money back and you will never see this girl. What I would suggest is calling your local police and FBI center and filing a complaint. Do not send any emails to the lawyer, allow the FBI to handle it. Since this was a newer scam they may be able to track them down. These cases are hard to break since there are millions of these scams going on right now and Nigeria is not working with the US to put a stop to it.
I am sorry, I wish I could give you a address to track her down. The reality is this women does not exist and is a scam artist.