继女 (jìnǚ) means "stepdaughter," referring to the daughter of one's spouse from a previous relationship. The character 继 carries the meaning of "step-" or "inherited" in family relationship terms.
她对继女非常好,就像对亲生女儿一样。
Tā duì jìnǚ fēicháng hǎo, jiù xiàng duì qīnshēng nǚ'ér yīyàng.
She treats her stepdaughter very well, just like her own biological daughter.
他的继女今年考上了大学,全家人都很高兴。
Tā de jìnǚ jīnnián kǎoshàngle dàxué, quán jiā rén dōu hěn gāoxìng.
His stepdaughter got into college this year, and the whole family is very happy.
虽然是继女,但她们的关系比很多亲母女还要亲。
Suīrán shì jìnǚ, dàn tāmen de guānxì bǐ hěn duō qīn mǔnǚ hái yào qīn.
Although she is a stepdaughter, their relationship is closer than many biological mothers and daughters.