Now here's the thing. For anyone who still thinks that Danielle has never been anything but loyal to Jason, consider this. Why would she have been unclear with Lisa? It made no difference in who was evicted, because Danielle knew that Jason would do what Danielle wanted in breaking the tie. The only differences between this outcome and the outcome where Danielle and Lisa both vote out Marcellas are that Lisa's vote against Amy is revealed, and Jason's vote against Marcellas is forced. What would have protected Jason best this week was to communicate clearly with Lisa that she wanted Marcellas out if he didn't veto himself, so that Jason wouldn't have to cast a vote at all. Danielle confused Lisa, in my opinion, to make Jason look bad. She knows that her odds against him in a final are very bad, but this maneuver gets her a possible vote in a final against Lisa (Amy's) and a possible vote in a final against Jason (Marcellas's -- he may hate her, but he seems angrier at Jason, and now at least he has to hate them both equally). So I don't really think she acted in Jason's interests here. Not that Jason seems to mind. Or notice. And if you don't believe me, consider that Jason appears to have asked Lisa during the HoH competition whom she voted for. Of course, this could have been for Lisa's benefit, but it also may mean that Jason didn't know Danielle was planning to spring the tie, either. See? I'm not so sure Danielle is playing to protect Jason, no matter what she may insist.
Danielle reassures Lisa in the bathroom that the whole débacle is nothing to worry about. Lisa is unconvinced. I think she's receiving secret messages through her exposed cleavage, which acts as a radio.