I'm 23,000 into my new WIP and I have a lot of 'thanks mum' and 'hi dad' in it. My initial thought is not to capitalise them, but I've had comments to the contrary.

I'd appreciate any input - I'd like to rectify it as soon as possible.

thanks

Well checking in the nearest childrens book to hand, they do put them in capitals if they are used as the person's name or nickname, or similar. But not if it's just a common noun.
eg:

"Hi, Dad," he said as his dad came into the room.

or,

"Hello, Mum," he said as his mother came into the room.


- NaomiM

<Added>

Drat, I'm going to have to go back and change all mine now.

That's very helpful Naomi Gonna have to go through mine and change it too.

Double drat

thank you

Naomi's right. That's how mine has always been copy edited.

R x