Will you be having a 12 month check with the HV? Could be useful to discuss how you think she's getting on. As I recall, I think they are supposed to have around 50 words by 2 years old, so she's got ages yet to develop her language.
Both of mine only started talking when they were approaching 2. Delayed but otherwise normal it would seem. Some babies are just like that I guess. So long as your LO responds to sounds I'm sure it's too early to worry.