Man that is some beautiful stuff ... You should consider buying a different case and selling it as a whole locally. The purple sleeving is gorgeous and it seems like you have everything ready to go.
I agree that wire-tapping is wrong in most cases. But once you have reasonable doubt of her fidelity, AND you catch her? Well in this case the end justified the means.
I doubt it will hold up in court since it was unlawful recordings, and wiretapping, but I'm sure you will win regardless.
Best...