Caught listening to her sister's conversation, Jen was ABASH and quickly put down the receiver.
...Jen was ABASHED... ABASHED is an adjective, not a verb. ABASHED is embarrassed, uneasy, feeling bad about the bad thing you just did.
"Jen was abashed when her teacher saw her cheating on the test."
"When Jen looked in the mirror and saw how drunk she was, her dirty hair, her torn clothes, she was abashed and swore she would never drink this much again."
Common word in writing, but I have never heard it spoken.