My proposal would be to highlight the diversity of Ex Miscellanea, so it won't be only a portrait of Pralix, but her discussing with two others mystical characters, clearly from other traditions:
In a stone circle (part of the circle is only visible in the background), three characters are sitting around a round boulder, possibly looking like a very eroded stone head (dead giant or troll?), covered with moss. Those three characters are peacefully meeting and discussing. On the stone head-table, three wooden bowls, some steam coming out of them: it is a social, peaceful discussion, each party brought gifts as sign of peace and respect (pink, glowing crystal, a short staff adorned with strange carving, a crow skull with one shining stone embedded in one eye-socket).
Characters, from left to right:
Side views: an old crone, although bend in two she is still taller than the two other, obviously with giant blood in her veins (think Baba Yaga), representing a witch coven, with all the archetypal items and decoration: hands ending with long, stony finger nails, a owl on her shoulder, a small cauldron used like a satchel at her feet, with various herbs, twigs, possibly bones poking out of it, one hand pointing at the crow skull.
Front view (center): Pralix, middle age women, athletic build, straight posture, a war scythe behind her, laying on one of the standing stone (war scythe is a pole arm, with a semi curved blade at the top, Pralix's is made with a handle of black wood, etched with golden symbols, the blade is an-half a jaw, with teeth, of a forgotten monster). Her outfit is simple leather, worn, embedded with a few shining stones. She is talking, her hands are open in a gesture of welcoming, her palms are tattooed (no hermetic symbols).
Side view (right): a short, dwarvish looking, stocky, young female (Rusticani type tradition). She is wearing an leather apron, at her belt, various wood worker tools (knife, chisel), small axe at her feet.
While listening, she is carving a small bird with a knife, as to keep her hands busy.
The idea is to also have a representation of the Crone, the Mother and the Maid, triple deity presents in many mythology.