It's mithril, and she's very very strong, but that is still pushing it. ...she wants her angel wings to last forever. Will they do that, if she thinks about how they ought to?
(Iomedae does not, fully, understand how she develops new magical abilities. Paladins have a spell list, and she is a fourth circle paladin, and so she can ask for paladin spells up to fourth circle from Aroden, and get them, and she has a standard set she always asks for. Separately from that, some of the spells she can cast in a manner no one else can, not the precise and careful woven-magic that mortals use but the stubborn, flexible, intentional magic Arazni could always call to her service. Iomedae's Divine Favor is better than anyone else's. Iomedae's Sacred Bond has better range and she can lay on hands through it. Iomedae's Break Enchantment works every time except on things Tar-Baphon did personally. Others have watched her do it, and it's not that she's found a different stable spellform they could ask Aroden for themselves; it's just that the magic knows what Iomedae wants, and will depart from the stable spellform to give it to her.
And then separately from that she has a few more spells for which she doesn't have even a passing explanation. One of them is Telepathic Bond. The first time she got Telepathic Bond she thought she'd become a fifth circle paladin - no one has heard of that, but that's hardly prohibitive- and that since she hadn't known to ask for anything she'd gotten something practically at random. The next day she'd asked for Plane Shift or Breath of Life or Miracle or Holy Aura or Winds of Vengeance, please, powerful cleric magics that seemed like the kind of thing a fifth circle paladin might get, and after a few days of trying it became clear that, no, she can only have Telepathic Bond. They eventually concluded that it's like she picked up Aroden's community domain, as a cleric of fifth circle, but they don't know how she did that, or whether only she can do that.)
So at this point Iomedae figures that Aroden sponsored her to the point where there are not defined agreements, about what beings like her ought to be able to do, and it's at least sometimes worth just checking whether she, herself, is the main entity providing input into that question for the universe. And she'd like a Plane Shift, or permanent Greater Angelic Aspect, if either of those are forthcoming, and if they aren't, fine. She'll swim to demons and fight them.