She’ll correctly say daddy and the names of her 2 siblings. Says ‘yes’ in context and shakes her head for no. Understands what I mean when I ask if she wants a water/snack/apple. Follows simple commands such as ‘sit down’ and ‘come with me’. Can ask for a banana or her ‘baby’. Will not say Mummy! Doesn’t even make an attempt when I ask her to repeat a word (but does really well with other words). Is this normal?