She also lost much more by accepting the lump sum. She did not care how much it would be in installments because she wanted to close the deal ASAP and run with the money which costed the real winner at least a 100 thousand more.
These criminals are so dumb. Things like that don't go away. Sooner or later the cousin would see that they bought a new house or something and start being suspicious or someone would tell her that there was a big win and she said she won something at that time. You never steal from people close to you not only because it's savage but also because you're going to be seeing these people for many years and looking at them knowing you stole from them.