If we assume prayer-blob is LHO, the problem isn't confined to Lovelady. The majority of the twelve people stood on the TSBD steps as the President passed by knew LHO by sight, as did other employees who would have a clear view of prayer-blob such as O V Campbell and Roy Edward Lewis. In Darnell we see employees streaming back into the building all filing past him. When Baker gets into the lobby he sees "several people standing around" who we can assume are returning employees who have just passed LHO on the steps.
The number of witnesses who recognised LHO on the steps would probably run into double figures. In order to avoid this inconvenience PMZ's have LHO slipping outside quietly at the last minute and taking up a position at the back where he goes unnoticed (lets ignore the employees filing past him). AND THEN, to make the height requirements the same zealots have LHO in this position:

Here we see him stood in the most awkward position imaginable, blocking part of the steps, in plain view of anyone on the top steps and right in the face of any returning employees. Hardly inconspicuous.
As soon as the FBI started interviewing people they would be hearing statement after statement placing LHO on the top step. All these people would have to be individually threatened and all would have to play along. In terms of mysterious deaths, every single person who witnessed LHO on the steps that day would become a top priority target.
This is all fantasy of course and goes away when we realise Oswald was not on the steps and is not prayer-blob.
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.