Hi Fiona

I have some experience with young children and speech issues:
- all children will develop the ability to use speech sounds in a general order, pattern and timing (you can probably read up about this); most children will make common speech errors that correct themselves through normal development
- but sometimes they don't. Hearing loss (even if temporary) is one of many reasons that might contribute to a child's delay or disorder of speech
- speech pathology treatment is usually most effective is children under the age of 5

My suggestions:
- try to make a note of anything you can to do with DD's speech, e.g. the errors, if they're consistent or if she 'breaks her own rules', if it's worse when she's tired/sick etc, if she's bothered by being unable to make herself understood
- don't give her too much specific feedback or request that she correct her speech, but let her know you're trying to understand and want to communicate with her
- keep doing lots of reading and other vocal play; you are her model
- investigate both hearing and speech assessments in local public and private clinics (for some you may need a GP referral, others you may not); just make an enquiry at this stage, as some clinics have waiting lists, and other clinicians may ask you to monitor for a few months more, depending on how you describe what's going on with DD's speech

HTH