Learning piano is a big big investment but that being said, I think its best to go straight to an acoustic piano as you will not need to worry about upgrading it in the future. The high quality digital pianos are upwards of a few thousand ringgit already so might as well go for acoustic.

Yea, I myself have learned piano for 10 years and it has gotten to a point where you really have to spare 2 hours daily for practice. It is a real commitment that takes a lot of time.
Then again, your child has to ask herself what does she want to achieve in music, to play the piano for a living (professional pianist or music teacher) or just personal recreational hobby? But piano is a good foundation for all instruments so it will be relatively easy if she wants to transition to other instruments.