The gro clock has completely stopped working having successfully used it for 2 years! For weeks now my 4 year old has been getting up super early. Before the clock change it was 5 something but now it's regularly around 4.30am. We have tried later bedtimes (8-8.30) but it makes no difference!
I thought it was a phase that would pass but 4 weeks later and no change. We are all beyond exhausted, including my 9 month old who is also being affected.
Until not that long ago she had slept 7-7 her whole life.
What happens if you just say 'no, it's night time, go back to bed'. It sounds as though she is coming to on one of the sleep cycles - is there anything that happens at that time in the house? Heating clicking on? Boiler making a noise? At 4 I would be using bribery and corruption if just telling her to go back to bed didn't work. She's old enough for a sticker chart, and to understand the concept of day and night, and right and wrong.