Sus,
Unless you are very wealthy and have a shed load of money to waist, Catch has given you the best advice, you realy should take it. Proffessianal forensic analises of computers is expensive and is the only analises that would be exepted in a court of law.

You probably have already tainted any evidence that may be available by having an unqualified "tech"? play with your computer.

You may or may not be able to involve law enforcement, this being a domestic incident. Your lawyer should be the one to talk to.