Danielle hasn't changed herself, just her gameplan
Now that Jade lost in a vote, Danielle knows the she and the rest of the dreaded coven are not loved, I think she's just keeping quiet for now. Meanwhile, it's Jo who's making a fool of herself, and unfortunately, I think that Cleo might be replacing Jade (I hope not though, I like Cleo and hope she doesn't turn to the darkside!). She hopes that other members of the coven are targeted by the public first so she stays longer.