Sick Cheryl Tweedy's mum keeps vigil by bed - Exclusive

Cheryl Tweedy's mum Joan was at the bedside of the malaria-stricken star yesterday as she vowed to return to X Factor.

The Girls Aloud singer wants to be well for the ITV show's boot camp stage in two weeks after pulling out of auditions at the weekend.

A source said: "She may be OK by then and that's her main focus. But everyone will have to wait and see. It's one day at a time for now."

Cheryl, 27, has been transferred to a specialist tropical diseases ward at University College London Hospital in Central London as she battles the potentially fatal illness.

Mum Joan Callaghan, 50, arrived yesterday at around 8.30am looking exhausted.

Cheryl is believed to have caught malaria while on holiday in Tanzania with boyfriend Derek Hough, 25, and collapsed on Saturday.

V Festival organisers said yesterday they still expected her to perform at the two-day event in August.