You missed a piece, unbelievable. My understanding is that it went down like this . .
Shelly mentioned to Rachel that Jeff threw the veto.
Rachel got angry or something. I don't know what happened after that. According to Shelly she was called to the DR and when she came out she heard Rachel and Dani talking and decided to just them talk.
Rachel and Dani had a convo, where a deal with Dani and Rachel was struck. I think Rachel may have said get one more vote and you can count on mine. Dani used the Jeff throwing the veto thing to solidify what Shelly just told Rachel.
Rachel then went to the HOH. Told the Js everything.
Rachel out of the HOH and into the storage room with Dani, Shelly and Rachel.