maidenly

adjective2

1. •
   Of or pertaining to a maiden.
2. •
   Suitable for, or befitting a maiden; gentle; modest; pure; shy.

   • “I’ll try, but it was a very ungentlemanly thing to do, I didn’t think you could be so sly and malicious, Laurie,” replied Meg, trying to hide her maidenly confusion under a gravely reproachful air. — 1868