Once Tiffany had that meltdown after her entire alliance ensured she was safe in like the second week, Da'Vonne realized she could potentially be another Vanessa so logically Da'Vonne wanted her out
She needed someone to help her go forward with the plan so she lied to Frank to help her. Once Frank and Tiffany found out she lied, they both wanted Da'Vonne out but they were unable to get the votes. Frank even got Da'Vonne on the block but he clearly couldn't get a plan to turn the house against her, and a result he'll be going home this week for trying the Queen.
And the showmances really didn't start to solidify until like two weeks ago, when Tiffany and Frank were so focused on getting Da'Vonne out. There was no way those three were gonna work together since they all needed the showmances on their side.
Da'Vonne has already started to turn the target to Nicole and if these last two weeks are any indication of her power, I have no doubt we'll see Nicole evicted next.
