Her headteacher Alex Clark, of Avenue Primary School, said the school community had been shocked by the death and their thoughts were with Ellie's family.
Ellie had many friends at school and this is a very sad time for us all. Ellie came to school every morning with a big smile on her face and was always giggling away about something. She was polite and well mannered and was a considerate member of the class, always kind and helpful towards her peers.
More top news
Elena Veronica Ciochina left her home in Newham on Saturday night and hasn't been seen since.
The internet's favourite grumpy feline has flown over from the US to take in the sights of London but looks less than impressed.
Nero jumped a fence in Watford which had a 12-foot drop the other side.