Any idea what breed this gorgeous pup is?

Flour is 8 weeks old, female and her mum was a stray jack russell x.

She was born in a litter of 3. Her siblings are white with a signature brown jack russell patch over their face. One had a black patch and the other brown. Both had a more staffy type build compared to Flour, who has a jrt build, but staffy colour scheme.

Could she be a Staffy x Jack Russell?