Yep, she signed a 3-year contract last year. Unfortunately, from the bits and pieces I've heard, not only did she sign a 3 year contract instead of 2 (which is almost always a bad decision financially and career-wise in volleyball, at least for a star), but she also supposedly did it at a discount, as if the club was doing her the favour of signing her for that long so she returns the favour of agreeing to lesser salary! If that is true...as good as she is at volleyball court, she is as naive as a child business-wise (and her financial advisor is robbing her blind by colluding with the club against her best interests).
However, that may be an unfounded rumour (and I hope it is)
Players not necessarily have only one criteria (money) while signing contracts. There are not many clubs who can offer same working environment to her. To me it makes sense to sign a long contract. It is a win-win to both sides