That's a pretty bold assumption on your part. I have no idea what her motivation is, but neither do you.
That being said, you yourself said she motivated by money she doesn't need. If she so clearly doesn't need the money how can you be so positive it is her motivation?
By the way, she gives away money all the time. There are stories all over about her simply hearing about someone down on their luck and she buys them a car or sends them a house. But as for this crowd here at TB I'm sure you all have her figured out. They're all just publicity stunts for sure.