However, Ady could reconstruct that scene visually where the executor appears in some other fashion after she mentions it. One idea would be to have it much further back in the distance, and rapidly getting closer as the Falcon approaches.

"Rapidly getting closer" indeed! :) The thing is not big but "quite" fast! :) :)

I mean, after Leia points it and it is shown in the distance, the Falcon turns in a clear attempt to keep distance but a few moments later the Falcon is 'flying low" near the Executor´s side trench, with fighters still in pursuit; moving the Executor further back while keeping the rest of the sequence doesn´t look that good in the whole picture...