My Grandson is 2, his Mother's boyfriend slapped him across the face and left a welt, she denies that he did it. What can I do?

You can call child protective services or the police. Make very sure of your facts, though. This is a serious allegation. Doing this may, at least...

I had store credit at a rental company. Gave my store credit to a friend. Something happened to equipment. Am I responsible?

Not if you didn't sign the rental agreement. The amount of your credit could be taken, though.

Can I seek legal action with a jeweler?

You can, but if the diamond has sentimental value, I would wait until I got it back.

You haven't been ordered to do or refrain from doing anything. You can contact him at any time. I would wait, though, as a matter of courtesy,...

Does someone have to prove "Prior Knowledge if they sell something or trade something to someone and find out it wasn't real ?

This is called a "mutual mistake of fact." It makes the contract void. http://en.wikipedia.org/wiki/Mistake_%28contract_law%29

What are my financial responsabilities while I am not home due to restraining order

A restraining order does not change your financial responsibilities to third-parties (landlords, lenders). Unless such responsibilities are...

If I have a restraining order against me and my wife handles our car payments we are both on the loan, must she make payments

Someone must make the payments or the lender will repossess the car and sue both of you.

There is a fine line between negotiation and threatening. This is why you want to have your own lawyer. You can bring the threat to the attention...

Mail theft and possibly fraud. Ex girlfriend stole. Illegal?

Yes this is illegal. Notify the police department and post office.

Yes this is illegal. Notify the police department and post office.