Password Help

Jan 19, 2015
I have a 2013 11" MacBook Air. I used it with my ex-girl friend. The master password and log in password are only known by her. When I asked her for them, she declined and said to take it to Mac Repair to have it wiped clean. Problem is, there are pics and docs I still have on there that are not in my iCloud.

I have read many blogs about holding command+s to get to single user, but because it is firewall protected, and won't open in that mode. Since it's a MacBook Air, there is no "start-up disk" to change password. I have already called Apple Support for FileVault recovery, but no help.

Any suggestions?