This happened to me a lot of times. Relatives used to borrow money from me and out of mercy I lend them my hard-earned money but they didn't pay me and they are even ignoring my texts and chats. From my experiences, I learned to say no and cut ties with abusive relatives. You did the right thing because that's a huge amount of money especially if that relative of yours isn't trustworthy. When it comes to money, we can see the true colors of the people around us. You shouldn't be the one to feel awkward because you just saved yourself from stress.