She's infamous for this.
She's a right moody cow apparently. She used to do vox pop at Canary Wharf, and in-between being on camera, would get mightily booed by the crowd, presumably because she was such a spoilsport (either that or they were Man Citeh fans thinking it was Forlan).
Maybe this is why they moved her to Tower Bridge.
You could see her perma-grin about to fade at the end of some interviews.
BBC picks another dolloper for its sports coverage, to go alongside Garth Crooks and co.