This web site claims to gave a sample of what hearing aided speech sounds like:
Sensimetrics - HeLPS - Hearing Loss Simulator - Demo 4 - Hearing Aids
Of course since I'm HoH I can't tell if its accurate or not, you may want to ask your child's audiologist.
You might want to get familiar with what kind of assistive listening devices (ALD) there are. I would just google "assistive listening devices" -- I'm guessing it's against the rules for me to refer you to specific on-line catalogues.
Generally they fall within two groups:
Ones that make sounds louder
Ones that replace sound with another type of alert
So for example a telephone with a built-in amplifier or a box with a loud ringer that attaches to the phone are examples of the first kind.
An attachment that flashes when the telephone rings or an alarm clock that shakes a vibrator powerful enough to shake the bed are examples of the second kind.
Of course your daughter is a little younger than the target market for those kind of ALDs

but it can give you an idea of what her future options are.
Also, if your daughter doesn't hear well in noisy rooms or if she doesn't you may want to check out FM systems. People with hearing loss even when they are wearing hearing aids can't usually understand conversation from as far away as people without hearing loss. That is another reason FM systems are used.