I don't believe anything the Daily Mail says, unless I see proof from elsewhere, so I'd take with a pinch of salt the statement that her father now wants to come after all. It's hard to know what the real truth is. We probably never will know.
I have felt uncertain whether she will stay the course with Harry, but it's his choice. I do feel sorry for them both though. The week before the wedding should be a happy time, looking forward to the big day. It must be horrible to have all these last minute uncertainties, quite embarrassing for her, and all so public too.