Yes, I meant which First Lord. So, if she's an ex-Cursor, is that 'ex' only because she joined up with the PPC, or did she retire in-world, and how? And if she fought the Vord, then she served towards the end of Sextus' reign, I take it? Older or younger than Tavi?
It should be noted that skills--however limited--in all the crafting types are painfully rare except in the very highest Citizenry. My immediate suggestion would be that unless she is supposed to be related to--and, within-world, probably known to be related to--one of the major families, especially the High Lords'? You're going to want to limit her crafting sharply to either two at decently to strongly formidable levels or three, with one noticeably stronger and one extant but barely functional.
For someone like her, I'd point to Bernard and Fidelias as the proper templates for highly-powered in multiple crafting types. Bernard is noticeably and highly powered in wood and earth, but without anything noted in any of the others; Fidelias is similarly powerful (or possibly slightly less so, but with a different kind of finesse) and also has some low-level watercrafting. I think in her case you'll want to look at Fidelias in particular. Healing is actually decently difficult; as I recall, Fidelias cannot manage it at all, though he can change his appearance with many weeks of putting in a couple hours a day into it. Knowing when someone's armed with metallic weaponry is pretty much a natural side-effect of being a remotely noticeable metalcrafter and has a lot less power and skill associated with it.
Given what you seem to want to do, I'd suggest limiting it to firecrafting and windcrafting with a possible side dose of minor metal or water--not both. In particular, if you want woodcraft for hiding, keep in mind that isn't actually necessary: windcrafters can do both auditory and visual veils (there's a whole part where Gaius Sextus teaches Amara how to veil while flying, and it's the windcrafters who do soundproofing). Far more to the point: it is more interesting to have a Cursor who does not have 'Every Possible Base Trick In The Arsenal' to work with. Cursors are chosen to be deadly and creative about it, and work around their difficulties. One of the most dangerous Cursors in Alera is little Ehren, and he doesn't need more than token crafting to murder a High Lord--and Tavi himself, pre-crafting, could have taken out two given the element of surprise. It's not about how much crafting, it's about how it's used, and with Cursors? The best of the best are smarter than they are magically powerful.
This is, of course, a good rule of thumb for creating Agents in general--being a not-dissimilar vocation--but in the case of Aleran Cursors this is implicit and frequently explicit in canon. Unless your agent being a child of the upper echelons of the Citizenry is crucial to her backstory, I'd say limit it; if she really is that high-born, of course, you've got a radically different ballgame with its own set of challenges.