I agree, she doesn't have to do anything, but why was everyone coming for Taylor? Beyonce and Nicki are just as vocal about being feminists but why aren't they criticized for being silent when Taylor was?
Where were Kesha's tweets when Beyonce was receiving death threats after the Superbowl?
Beyonce has done a lot for women and feminism throughout the years, if a little meaningless hashtag somehow invalidates all that work that says a lot about your definition and understanding (or lack of) about feminism than it does about her.
Rather than obsessing over how many celebrities are tweeting support for Kesha (which means nothing as far as her being freed from her contract), go focus on raising money or some **** to buy her out of her contract.
In fact tweeting #FreeKesha is probably the least ineffective way to support her, it doesn't actually change anything, its just self-gratifying and people think signing petitions online is actually a form of activism when its not. It's thing people use when they can't really be bothered to do anything about a situation but want to make themselves feel better.
What Kesha will need to fight this legal battle is money.