Elaina's blood is still boiling in anger. It's fine if her parents and the other people who were with them tried to provoke her. It's fine if they humiliate her as she can handle those without being hurt. It's fine if they try to harm her physically as she can endure that without problem.
But that doesn't mean involving her unborn children is fine as well. She might not have met them just yet as they are still developing inside her body, but they are part of her flesh and blood, body and soul. The moment they will try to involve them, Elaina will not try to sugarcoat it. If not for the fact that she managed to hold off her anger to the critical boiling point, then perhaps those people including her parents would have suffered severe injuries by now and perhaps she is now stomping their backs while they are dying.
After she displays aggression to them, Elaina slumps to the ground tired and catching her breath like she just ran a few laps around the town.