Well her grandmother is from edonia and had red hair, so does Rebecca's brother Ulric and her mother too.Becky takes after her americanc father.After the events of Re1 she decided to stay in Edonia for good,raising Wesker's love child.exposure to the t virus made her sick, so she stayed inside and covered up. Jake being the son of wesker was immune.eventually she died, leaving jake with the lie that their father loved them.she was the person who taught jake how to use a knife and fire a gun.meanwhile, billy who cared for Rebecca was his mentor who did mercenary work.he died in a skirnish at the capital