Hall, who was in his 40s at the time, was said to have forced his tongue in her mouth and told her "You're special" as he raped her.
He has already pleaded guilty to indecently assaulting her when she was 13, but claims he went on to have a consensual sexual relationship with her.
The alleged victim, Girl B, told Preston Crown Court that she chose to keep that assault and the earlier alleged rape a secret.
Hall, 84, has pleaded not guilty to 20 allegations of rape and indecent assault between 1976 and 1981 against two young girls.
He is serving a 30-month sentence after last year pleading guilty to 14 offences of indecent assault.
The trial continues.