Community ManagerPlease see info on common issues and workarounds here: http://help.ea.com/en/article/common-gameplay-issues-and-workarounds-for-ea-sports-ufc-2/
Additionally, you and your friend should both open the following ports to maximise connectivity, particularly with regard to matchmaking:
http://help.ea.com/en/article/online-ports-to-improve-your-ea-sports-ufc-2-connection/
Community ManagerHave you deleted and re-added that particular friend?
If so, you and that friend should both go through the relevant connection troubleshooting below:
http://help.ea.com/article/connection-troubleshooting-basic/
http://help.ea.com/article/connection-troubleshooting-advanced-xbox/
http://help.ea.com/article/connection-troubleshooting-advanced-playstation/
Community ManagerYou might ask your friend to check if her XBL Gold or PS+ subscription has lapsed.
