<human>: Can you provide a brief overview of the text?

About 10 years ago my brother and his wife got into some serious money trouble. Like lose the house trouble. Like he got arrested for embezzlement trouble.  My mother helped them out to save the house by taking a loan out on her house, which they are repaying on. He cashed in his 401k to repay his employer and is on probation now. 

But in the process the somehow got her information and opened up a bunch of accounts. My mother said if they took her off the accounts and assumed the debt she would not press charges. He would have gone to jail if she had done so. It appeared that they did so. That was just after his arrest.

They called my mom and said that there was a delivery for them coming from fedex, that they couldn't change the delivery address as hers was the one on file. (They had lived with mom for about a year after the charges and my brother lost his job.) She didn't think anything of it, but it raised a bunch of red flags for me. 

I checked out the billing information and it was billed to a "bill me later" account in my moms name. There's about 5 large owing on that account. Minimum payments are being made. The fedex package was the new ipad...4g 64gig...in white. 

I called my brother and told him that we put a fraud alert on the account. Apparently his wife left him and took his son this afternoon, saying they were heading to california. Now he wont answer his phone. I'm worried, guilty and scared. They seem like upright citizens from the outside but they never expressed a moment of guilt or shame from what they had done the first time, it was all to "help mom with her credit," and bull like that. 

Sorry for the wall of text.
<bot>: I discovered my brother and his wife stole my moms identity. Now my nephew is missing. This all happened this afternoon.