# took her

"they brought her to him" 

# she came to him

"she came into the place where he was"

# he lay with her

This is a polite way of saying that he had sexual relations with her. You may need to use a different euphemism in your language.

# uncleanness

The Israelites considered a woman unclean when she was bleeding from her womb, and she needed to wash herself after the bleeding stopped. The bath she was taking in 1 Samuel 11:2 may have been this ritual bath.