# lay with her father

This is probably a euphemism for sexual activity. Alternate translation:"had sexual relations with her father" (See: [[rc://en/ta/man/jit/figs-euphemism]])

# when she lay down

Possible meanings are 1) these words are literal, a complement to "when she got up," or 2) they are a euphemism for sexual relations. Alternate translation: "when she had sexual relations with him" (See: [[rc://en/ta/man/jit/figs-euphemism]])