Hermione exited her and Severus's living quarters, and she was quite hungry.
"Gotta eat for two now," she said to herself, gently rubbing her stomach.
She was nearing the entrance from the dungeons when she saw Severus there. He looked troubled.
Hermione considered for a moment that he might have discovered that she was with child, but she also considered that Madam Pomfrey wouldn't betray her trust like that.
"Darling, what's the matter?" she asked as he came closer to her. When she attempted to take his hands within hers, he pulled his away much to her surprise.
"We haven't much time, Hermione," he muttered. "We need to leave the castle at once."
"What's going on, Severus?"
"I'll explain when we're safe. Go and grab some extra clothes. We'll hide out at my house."
"But Severus…"
"Do as I say, Hermione. Go now."
Hermione was taken aback by his sudden change in behaviour, but to avoid confrontation she walked briskly back to their shared quarters.
Severus had collected his parcel full of potions ingredients and started back toward Hogwarts Castle when he ran into two familiar faces outside of the village. Vincent Crabbe and Gregory Goyle were still in school, having to repeat their 7th year whilst all their friends were out in the world.
"Crabbe, Goyle," Severus addressed them. "What are you two doing here? It is not a Hogsmeade weekend, and last time I checked the privilege was revoked for both of you."
The two buffoons said nothing as they came closer to him. "Did something happen at Hogwarts?" he asked them.
"No," Crabbe finally said before delivering a blow to Severus's stomach.
All of the air had been knocked out of Severus's lungs, and he fell to the ground. Goyle pulled out his wand and attempted Incarcerous. Severus was quick to whip out his own wand and, casting Protego, turned Goyle's spell against him.
Severus jumped to his feet. "What is the meaning of this ambush?" he growled to Crabbe.
Crabbe whipped out his wand and began the incantation for the Cruciatus Curse. Severus disarmed the Slytherin, then Stunned him.
"Something is not right," Severus told himself, and he ran back toward the Castle.
Hermione threw several changes of clothes into a bag, still concerned about Severus. He stood at the doorway to their living quarters, saying nothing and keeping his arms folded.
Hermione noticed the mirror on the vanity mirror next to her dresser drawer. She placed it in the bag.
"Why are you bringing that?" Severus asked her.
Hermione was shocked that he would even question her decision for taking it with them. She snapped her head to look at him. "You're joking, right?"
A look of pure anger flashed across his face. "You dare talk back to me?"
Hermione couldn't believe what she was hearing. "What has come over you?"
"I am growing impatient!" Severus yelled. "You are wasting valuable time!"
"Don't lecture me, Severus! I gave my life to you! I'm carrying life for you!"
Severus brought a hand down on her face, the force of which knocked her to the floor. "Ungrateful whore! The Mudblood gets knocked up and thinks she's entitled to something, doesn't she?"
"You bastard!" Hermione spat.
"Answer me!" Severus screamed. "Filthy Mudblood!"
Hermione grabbed her wand, but Severus was quick to disarm her. Beyond furious, he grabbed her by the neck and pulled her to her feet. He pulled out his wand and jabbed her in the cheek with it.
Hermione's heart sank. The wand that was held to her cheek was not Severus's. Something was not right.
"Stupefy!" a breathless voice sounded from the entry to their quarters. A bolt of red light struck Severus, and he fell to the floor. After Hermione gained composure, she looked up from the Stunned mass to find Severus standing in the doorway.