Phonics Phases and Reading Stages - confused

[EarlyInTheMorning]

First of all, English is not my mother tongue and I have not been educated in the UK, so if I'm asking a dumb question, please bear with me.
My 5 YO DD is in Y1. She's an excellent reader, currently on Stage 10 (white), no issues reading, comprehension and expression absolutely fantastic.
However, the phonics group she's in is currently covering Phase 3. Isn't this a bit behind. My DD's writing is not very good. Could this be the reason why? Are there any online games we can do together so that I can get an idea of where the problem, if any, may be?

[mrz]

If you think about it she did fine with tr ai n and st ar t and bl ee* d so that's a good beginning