I'm going through this with my Syrian too - although she's still fairly young and a maniac, so making trimming verrrrrry hard.
She has one nail thats gone curled on her little finger on her right paw. I cant get near it to cut it or file it...and when i gave up with the nail file cheeky Mo yanked it out of my hands and ran off with it to hide it! Think she'd had enough too!
I dont know what to do...I cant hold her to cut it...I have put a terracotta pot in as her sand bath in the hope that it will wear it down, but dunno if its gone too far for that