I used the word "experienced" to mean what it means in the case of carpenters or brain surgeons. Or wily spin bowlers. Knowledge gained from long practice in a difficult art making perfect.
Yes , it's like anything else that someone practices and gets good at - and that's when the practitioner might come to view it as more than the obligatory 'doing someone else a favo(ur)'.
I can't see that happening in this young girl's case though - from what she says.
I think "skull-full" is okay but the Shorter Oxford and the Collins both give "skilful"
I like the word 'skull-full'. Sometimes I feel like I have a 'skull-full' (of all sorts of things). Did you just make that up?