What is the meaning of her in Robert Burns poem tam o shanter?

In Robert Burns's poem "Tam o' Shanter," "her" refers to Nannie, the witch who is the main antagonist. She's the leader of the witches in the poem and the one who initially attracts Tam's attention.

Here's how "her" is used in the poem:

* "Her" is used to describe Nannie's appearance and actions. For example, "Her face o' fire, her een sae bright," and "Her cutty sark, o' Paisley print." This highlights Nannie's power and seductive nature.

* "Her" also refers to Nannie's influence over the other witches. She's the one who commands the witches, and her actions shape the course of the poem.

While the poem doesn't explicitly state Nannie's name, she's clearly the main female character and the one "her" refers to in most contexts.