Plural feminine pronoun; explicitly refers to a group of women or girls. Less common than the gender-neutral 彼ら, and often replaced by 彼女たち in speech.
They are all university students.
Please hand these materials to them.
彼女ら refers specifically to a group of women, while 彼ら is the gender-neutral or masculine plural 'they', and learners often mix up which one to use for mixed or all-female groups.
Standard kanji spelling for the feminine plural pronoun.
Rare spelling using 等 for the plural suffix; 彼女ら is much more common.
Compound of 彼女 (she) + plural suffix ら.