Mallory Bash #86: "Sister, You Keep Me"
In this episode, Ana appears in the Dark Garden, heartbroken over the abandonment of Cyrus and Ava in pursuit of Mallory. With her "family" gone, Ana has appealed to the Dreaming Tree to create for her a sister--the Arbor Mallory.
It's a bit long, so here's a teaser followed by the link to the comic: