The Prick-wary Seamstress

Seamstress to her customer, “You gave me such a tremble.
Had you come any closer, I’d have felt a nasty prick.”
“Apologies”, he answered, “for I meant no churlish trick.
I saw you were exposed and I was offering my thimble.”

In reply to this WordPress daily writing prompt: https://dailypost.wordpress.com/prompts/tremble/