Ellie, nine, was the British all-around champion and Paige, eight, came third at the Level 4 event at Fenton Manor on Saturday, April 25.
The South Essex duo (pictured) also shared the top two places on bars and floor, with Paige winning the former and Ellie the latter.
It was their debut at national level and SEGC’s women’s head coach Leah Hickton was delighted with how they competed in a top-class field of 60.
Leah said: “They were in the first of two rounds so we had a bit of a nervy wait to see how they did.
“But I could ask no more from them and this will go towards selection for the national squad next year.
“Ellie won overall by over a mark – and that is very impressive.
“Next up for them is the Voluntary Level 4 competition in September and between now and then we will be working on some new routines.”