What she referred to as Blukip (official name is Bluewave) is mostly people who were previously Tory supporters / members/ voters who defected to UKIP. Now that UKIP has imploded, they have gone back to the Tory party to influence things in order to protect the referendum result and try to prevent it from being overturned or ignored.
I joined the Tory party 6 months ago in order to have a vote in getting rid of May, but that turned out to be a waste of time.
Many others have joined in Constituencies where MP,s such as Soubry are persuing their own agenda in defiance of their own Constituencie voters and the overall result of the referendum.
Several of them were facing deselection and votes of no confidence so, have jumped ship to save their own skins, and persue their agenda which is the opposite of the manifesto they stood for election on.
They cannot possibly justify this without standing down and calling a by election, but they are filled with self interest, so wont do the right thing.