Which parts of this passage from chapter 6 of Emily Brontë's Wuthering Heights illustrate that Catherine is a strong and spirited person who can bear pain silently?
I had Cathy by the hand, and was urging her on, when all at once she fell down. "Run, Heathcliff, run!" she whispered. "They have let the bull-dog loose, and he holds me!" The devil had seized her ankle, Nelly: I heard his abominable snorting. She did not yell out—no! she would have scorned to do it, if she had been spitted on the horns of a mad cow. I did, though: I vociferated curses enough to annihilate any fiend in Christendom; and I got a stone and thrust it between his jaws, and tried with all my might to cram it down his throat. A beast of a servant came up with a lantern, at last, shouting—"Keep fast, Skulker, keep fast!" He changed his note, however, when he saw Skulker’s game. The dog was throttled off; his huge, purple tongue hanging half a foot out of his mouth, and his pendent lips streaming with bloody slaver. The man took Cathy up; she was sick: not from fear, I’m certain, but from pain.

A.. "Run, Heathcliff, run!" she whispered. "They have let the bull-dog loose, and he holds me!" The devil had seized her ankle, Nelly: I heard his abominable snorting.

b.She did not yell out—no! she would have scorned to do it, if she had been spitted on the horns of a mad cow.

c. I vociferated curses enough to annihilate any fiend in Christendom; and I got a stone and thrust it between his jaws, and tried with all my might to cram it down his throat.

d.The dog was throttled off; his huge, purple tongue hanging half a foot out of his mouth, and his pendent lips streaming with bloody slaver.