yes they are a christian band

No. She was in Sleeper.

album name is sleeper catcher from 1978

Yes, Sleeper's Awake is a band from Reading, Pennsylvania. They released a self-titled EP earlier this year. The lead singer has done some solo stuff under the name Sarah Elizabeth.

http://www.myspace.com/wearesleepersawake

http://www.myspace.com/sarahelizabeth A quick google search also revealed a progressive rock band from Columbus, Ohio by the name Sleepers Awake (no apostrophe). http://www.myspace.com/sleeperrock

A sleeper railway carriage (or a sleeper, a rail sleeper, a sleeper car).