I hope they come to agreement to split it half and half after taxes. I'm with you. The odds she is faking is very low, especially if she reported it lost before the numbers were announced but even after they were announced. How would she know where the ticket was won.
If it can be proved she bought it, it should still be a split winnings though.
The location where the ticket was sold was known before the store opened at 5:00 a.m. The store owner didn't even know what was going on when he pulled up and there were reporters waiting for him.
She had three days to make up her story about how she picked the numbers and lost the ticket. She's a liar and a fraud and she should be sent to jail.