Learn English – “She” or “her” following “no one but”

From your own moral point of view, you could say that she has a skewed moral compass and that she's simply rubber-stamping the mores of the morally bankrupt society that we live in.

Or something like that ...

A mother takes care of her children.

The Original Poster is correct. The word her here is a possessive pronoun in determinative function. The complement or object of the preposition of is the noun phrase her children. The head noun in the noun phrase is children and the determinative is her.

The possessive pronoun her and the object pronoun her are homonyms - they look identical. However, it is easy to test if this is the possessive or object pronoun. We can simply substitute father for mother and see whether the corresponding word is the possessive pronoun his, or the object pronoun him:

• A father takes care of his children. (possessive pronoun)
• *A father takes care of him children. (ungrammatical: object pronoun)

This shows that the determinative in her children must be a possessive pronoun here.

Hope this is helpful!

Note: The term object pronoun is not very helpful. It tends to imply that the pronoun needs to be the object of something to be in this case - which isn't true. Accusative case pronoun is a better term, imo.