This is… doable, but it's going to be tedious. She adds another nine items to her shopping list, most of which are not commercially available on short notice unless she wants to visit Quantium or Shraen and spend a small fortune in the process. The Rasping Rifts and the Midnight Isles, like most other layers of the Abyss, are filled with gemstones that no one has bothered to prospect for and short on biological reagents that don't come from demons or the damned petitioners that live there, so she's not expecting any help from that quarter.
Realistically, if she wants to get her hands on the yolk from an unfertilized simurgh egg or a hundred gallons of lycanthrope serum before the end of spring then she needs to acquire them herself – which will take time, but right now she has more time than money, a situation that no other archmage in history has found themselves in. Any other ninth-circle spellcaster can churn out magic items faster than the coffers of the Shining Kingdoms can afford them, but Areelu Vorlesh has been maintaining some strategic ambiguity as to her whereabouts ever since she and Queen Galfrey fought to the death in single combat atop a lava geyser in 4630 AR. Arranging for both of their bodies to wind up incinerated by pyroclastic flow in the aftermath was tricky, but the results speak for themselves.
She could infect almost the entire population of Kaer Maga with incurable leprosy in a single day. Rinella Brenon would probably pay extra, if she did that. Unfortunately, Mendev is not completely devoid of people who might notice that everyone in a large city contracting a serious magical illness in mere hours looks an awful lot like Mythic Greater Contagion, and from there it's a short leap of logic for some of Galfrey's advisors to wonder why they're still alive. Her time is, ironically, better spent adventuring outside the Worldwound in between minor errands.
Areelu occasionally disguises herself as a lesser demon before picking a fight with Setsuna Shy, just to keep her skills sharp, but on the whole she's participated in a single-digit number of strategically important battles over the last eighty years. Her generals are more than competent enough to keep the borders of the Worldwound right where they are.