New to win8 - should be simple Qs

Hi. You thoughts welcome on my latest conundrum.

Just trying to setup a new laptop (well make a start) for someone's birthday soon.
Windows 8 - 64b (basic win8 I think) pre-loaded but was a virgin install (manufacture's).
I've not connected to the net yet and not activated anything yet.

Now thinking like XP and bad idea to set up usual owner/user as admin, and thinking I should build an admin account (if only to
'fix it' at term ends) I have added an admin (for me) and user (for daughter) but wonder if this is the best way.

She'll want to have access to admin from time to time but on her account it prompts for my admin (only) to change say the time, no
UAC ? - or is this because I've added my admin account (or because I haven't set her a password yet). If I promote her to admin is
it safe for normal use.

So what is the correct way to set this up for one owner/user ? (I should be able to delete any/both accounts I've set up so far I
think).

Also, is there no "Administrator" default account on W8? With no one logged in, control -alt-del doesn't bring up any options to
access 'Administrator'.