I had a scenario where a woman I once dated, was actually married and I didn't know that until many months later.
The thing about people is that everyone is different, and if Carlos' girlfriend cannot see him as a different guy than her ex, then she is going through an issue she needs to solve first before entering the relationship. I don't know if she had time to forget her ex, but carrying that baggage into this current relationship is going to stress you out, Carlos. I would suggest working together with her to show that you are a different person, but she needs to put more effort into being honest about her views. That sniffing clothes crap is doubt, and if she isn't 100% set on working it out, then this woman may be a lost cause.
Teach her to see everyone differently, not as the same scum that she met before.