Any way to legally recover on a handshake loan?

My wife and I are in the process of divorcing. The cash is already split up, and we sat down and listed ets and agreed on how we should split them. I sent the list to my attorney, who wrote it up, and sent it to her attorney for my wife to sign. The day my wife got the paperwork, she came to my work, and told me that she wanted more money. After a short conversation, it came out that she feels she needs more money because she loaned her new boyfriend $6000 to help pay his bills. She's only know the guy for a month, and she didn't get anything in writing, she just transferred the money over to his account, without so much as a verbal agreement of when he would repay the money. Does she have any way to ure that she gets paid back? I know it's not really any of my business, but I hate to see him take advantage of her, and I don't like that she thinks I owe her more, just because she made a mistake like that.