O.K. This is how you should go about seeing if ya girl was involved. First go to carrows when the big bitch working with out your girl. If she aint working your table just let her acknowledge that you were there..maybe just nod your head like whats up as if nothings wrong. If you do have contact with her do not mention the robbery and act as if everythings cool. Now if her and your girl are cool she gonna tell your girl she seen you...which is what you want to happen. So give a day for them to have contact. Then tell your girl...oh I seen ( whatever the bitches name) the other day.. is there anything you wanna tell me. Lie and say that you and the big bitch had a long talk. Plant the seed of betrayal and see what happens. Your girl may ask what did yall talk about ..say oh not much...but keep insisting if their is anything she wants to say to you....casually bring up conversations about loyalty and trust, and forgiveness to those who tell the truth...say you hate liars.....anyways this lil mind game may open shit up