No, her droppings do not look right, but I agree it could be due to stress.
How are the droppings this morning?
Do you have a scale for her? It would be optimal to weigh her once a day, so you can keep track of her progress, plus you'll get a ballpark idea how much food to give her via cup. In your case I like the 'cup' idea much more than feeding her via syringe.
Please don't just try and pump her full of formula all the time. It is possible to overfeed, and the results 'could' be quite harmful. Always make sure her crop has emptied sufficiently before feeding her again. Birdman is spot on with 104 degrees, and meat thermometers do work quite well. Just remember, the longer it takes her to take the formula, the cooler it's getting.
Some manufacturers make handfeeding formulas ESPECIALLY for Macaws, and I would find one of those:
[ame="http://www.amazon.com/Kaytee-Exact-Handfeeding-Macaw-5-Pound/dp/B000N3O4OC/ref=sr_1_2?ie=UTF8&qid=1416234137&sr=8-2&keywords=kaytee+hand+feeding+formula"]Amazon.com : Kaytee Exact Handfeeding Baby Macaw 5-Pound : Pet Food : Pet Supplies[/ame]
ZuPreem - Embrace® Plus Hand Feeding Formula
Thousands and thousands of baby macs are raised successfully on these formulas (by experienced breeders)
Not wanting to be negative, please do read the following thread. It's quite lengthy, but worth every single page:
http://www.parrotforums.com/general-parrot-information/19049-hazards-buying-unweaned-baby.html
No, raising a baby mac certainly doesn't require one to be a rocket scientist, however, a certain amount of knowledge and experience is preferred.
Another excellent thread is this one:
http://www.parrotforums.com/questions-answers/42431-unweaned-babies-trend-these-days.html