to our mightiest powers
Pyra is not new to the mental invocation that string players are a dime a dozen, so she'd better make her best showing at it. She's a far cry from any yen for arrogance, at any stage, but sometimes it would be nice not to have to be handicapped by the low calling of a high register only ever assigned the melody lines.
But, at least modern symphonies make them work for their outsize pay. The final movement of Prokofiev's Fifth is no joke - you're more than apt to be caught faking if you're not committed to shaking loose some rosin and caking some oils on your fingertips as you dig everything you've got into the strings.
It's not showing off if it's a righteous effort, is it? It's no more (well, maybe just a little bit) than is necessary and sufficient to bring it off for all it's worth - and it's worth a lot, Pyra happens to think.