Hm.
She should probably get some powers for learning magic, but what she should really do is something for these. Perhaps...
Can she get something to help with hope based body enhancement, perhaps, if healing is a thing? She's missing the hope based defense power, too, and that feels like it should be a good way to round things out for her first idea, and there should be no problem merging that all into a bigger power.
For what she wants to make...
Wonder Woman's is going to be the easiest. She has most of the physical structure done already by now, so all she needs to do is add her own little magic. It's going to be almost entirely hope - she adds in a bit of will, just to make it a little bit simpler to keep the sturdy steadfastness of the shielding effect, but mostly, that effect is formed from the power of hope to lighten your burdens, and the power to make obstacles and anxieties just... slide away, because you trust that it's going to be okay. She adds in a bit of the temerity of hope, too, to make it mend and flow and keep itself intact for as long as her hope she can help or win holds out. She's not - trying to make something that can hold up to anything, but to hold up with nearly anything going on, if that makes sense? She hopes that makes sense. She makes sure it can work as a stopgap air solution, too, and honestly it doesn't really take mu
Dealing with poisons once they get in is a little more complicated. She starts with a small fount of healing, restoration, striving stirring hope to keep going, then extends it, twists it and forming a structure of nurturing health, the hope of a caretaker and the simple hope for wellness and cleanness, the feeling of your day being brightened when things are cleaner and clearer, brighter and crisper, smoother and softer. There's a barrier here already, see, so making it wash away things that hurt those hopes just needs a little push, and a little tweaking of the fundamental structure of the constructs, twining and twinning the structures to make it reach a little further than it should, the soothing settling coolness of a lacquer, to wrap around whoever wields it, in the hope it'll protect something precious from the weathering forces of the world.
There's not too much she can do to tie it to her magic, especially without seeing her in person or more expertise, but if she's made of clay and born of earth... She ties it off with a little bit of her - oversimple hope that the earth will always stay turning, that the tide will wash all the little cracks away, and that the clay and the silt and soil that went into everything hurt and broken will heal through the cycles of the world, and be the foundation for something beautiful, perhaps, someday.
She etches on it the symbol on her crown, as a little touch, and adds a tiny layer of hope-hardened crystal atop it, to make sure that stays as safe as she can make it.