Do you mean Becky the girl who was in hospital in the next bed to Julie?
If you do the actress is called Abby Ford, she has been in Life Begins playing Samantha, My Family playing Rita and Harry Potter Prisoner of Azkaban playing a young witch maid.
Yes, I must admit that had me stumped for a while, I knew she had been in another tv prog with Caroline Quentin. Then it suddenly dawned on me that she had played the neighbour in Life Begins that had had the drugs that put Caroline's characters daughter in hospital. But now I am wondering where have I seen the irish guy with the black curly hair before?