Turned out to be a scammer.

So, First off I did a great trade with them, they were super friendly and they were quick to trade and such, but then they were going to do a trade with my friend, bit she canceled it because she liked her account, so she wanted to share it because she trusted them but they took that opportunity and stole her account, changing the gmail and username and blocking us on everything. So to sum everything up, they're a scammer, I won't change my opinion unless they give my friend their account back.