I'm already aware, this is something I've spoken to dog trainers about to get their opinion on, and it's something I've been working with, I've gotten Storm from being aggressive to people over her plush toys, dinner, etc, picking fights with the puppy she was with over those things- to being completely fine with people touching her food, or toys. And even bringing her things to us, wanting to play. With Sadie, she's now fine having toys with her, and they can eat in the same room (sort of two rooms attached but the door stays open, it's a big space) without issue.
In my view its okay for Storm to set a boundary with Sadie, though that's very rare. Usually its Sadie, the older dog, who will correct Storm when she's too excited etc. It just doesn't escalate into a fight, except I believe yesterday Sadie got too comfortable and reacted to Storms correction instead of backing off.
I never ignore them, theyre always supervised with food, and corrected/called away if they invade eachother space.
We're being careful, making sure that Sadie is keeping her distance, last night and this morning, and she did. She's been reminded. I just don't want their argument to cause a rift in their relationship. Storms been pretty sad, trying to gently and playfully interact with Sadie. But Sadie has so much trauma in her past, and it's brought her anxiety to the surface. Hence, a nice long walkies might help her