Here we have David, handsome son of Jesse and anointed king, though at present still wandering the countryside with his band of men and a lot of sheep.
Here also we have a fool called Nabal - 'surly and mean in his dealings', married to Abigail.
Now it's a hard slog out in the open country - for a while, David's and Nabal's flocks have been in close proximity and there's been no trouble, so David now sends a friendly message to Nabal, asking for a little hospitality.
Nabal sends back a rude message; David gets into a steam and all of a sudden, there are 400 of David's fighting men bearing down on Nabal's home. Honestly - these hot blooded men.
Tactical and courageous, she immediately organises a massive charm offensive, saddling donkeys with delicacies of fruit, wine and meat, and sets off to meet David and his troops in the mountain ravine. David is still breathing blood and thunder, swearing he will not leave a single male of Nabal's company alive by morning. Abigail falls at David's feet asking for mercy and pleading Nabal's stupidity. She cannily also suggests that this is a divine opportunity for David to be spared from avenging himself by bloodshed. David is impressed, sees her sense and accepts the gifts, saying 'May you be blessed for your good judgement (...) go home in peace' (1 Samuel 25: 33, 35).
A Hollywood ending has Nabal die shortly afterwards and David taking Abigail for his wife.
What it would be like being married to David the hothead I am not sure ('you've put the tent pegs WHERE????') but I expect she managed admirably.