Yes, I agree with You, Mr. Dan, that the one step down position seems a bit awkward.
I also agreed with the former Mr. Doyle, the logical place for a 300 lb fat woman to stand would be where Prayrblob is for the reasons:
1. Out of everyone else way and not blocking the door
2. Has better LOS to see motorcade
3. Not in the sunlight, thus having hands free to hold the coffee cup carefully with both hands, instead of having to use one hand to shade eyes
4. If it’s a porcelain white coffee cup from the 2nd floor lunchroom, the out of the way corner reduces chance of being bumped into, spilling the coffee and or dropping the cup and it shattering on the concrete landing
in summary the “fat lady” was self aware and taking precautions to avoid any potential accident or becoming an obstruction to her fellow employees.
There are some commonsense assumptions here but I'd like to make a quick point about the white porcelain cup.
This Gif shows two images from Wiegman. It shows the white 'glowing' object being moved up and down. The first frame is the one that shows the object being held up to the face of prayer-blob, the second has the object in the lower position. In his WC testimony Bill Shelley states he went for lunch about 11:50am, went to his office on the first floor and ate part of his lunch then went out front, on the landing of the steps just outside the glass door because their were already some people outside, one of whom was Sarah Stanton.
How long does it take Shelley to get to his room and eat part of his lunch? 10 to 15 minutes seems fairly reasonable, which would mean Stanton is out there already by 12:00 to 12:05pm. The above Wiegman frames are taken seconds after the shooting around 12:30. It's just an opinion but I'm not convinced Stanton would still be drinking her coffee up to half an hour later. Maybe she liked it cold and made it last a long time. Maybe she went back up to the second floor lunchroom and came back down with a coffee just before the shooting.
Personally I have a different idea about the object in prayer-blob's hand but the images are so sketchy I find it impossible to be definitive.