Francis possibly her brother - here's a possible from 1901 in Amington (parish of Tamworth St Editha). Frank could actually be a Francis - judging by Thomas and Louisa's 1891 census entry
Matthew Godderidge 72 b retired miner b Aminton
Thomas Davis 38 - son in law, banksman at colliery b Aminton
Louisa Davis 34 - daughter b Aminton
William Davis 12 b Aminton
Frank Davis 10 b Warton
Sarah Davis 6 b Warton
Tom Davis 5 b Warton
RG13, 2650, 53, 24.