"Well isn't this a marvelous sight" Lucius' face morphed into a cruel sneer as he surveyed his grown son.
"Aren't you going to introduce me to your wife, son?"
Having been momentarily shocked silent, Draco quickly stepped protectively in front of Astoria and pulled out his wand.
"What the hell do you want, Lucius?" he demanded more calmly than he felt.
"Now, now Draco, is that anyway to speak to your father after 19 years?" the other person cackled. It was none other than Bellatrix Lestrange.
Lucius grinned maliciously at Bellatrix. The years had not been kind to either of them. Lucius wore the face of a ragged and crazed man. His hair longer than ever, with an unkempt beard to match. His grey eyes shifted angrily from Draco to his wife. Bellatrix had clearly lost what little sanity she had left, she skipped around twirling her wand delicately whilst seemingly muttering evil and hateful things under her breath. She almost appeared to be talking to herself as her eyes didn't focus in any particular place for too long. Draco shivered internally, no matter how old he was he still got the same impression from his aunt, she was pure evil. How many times had she made him watch as she tortured some helpless soul into oblivion?
From behind him Astoria squeezed his hand tightly, Draco understood and squeezed back then let go slowly.
"How did you escape?" Draco implored heatedly. He was desperately trying to distract both Death Eaters whilst Astoria discretely left to go protect Scorpius.
"That is none of your concern, what matters is that we are here now and you will pay for your betrayal." Lucius said coldly.
"What do you expect Lucius, that boy always was a blubbering fool. It's entirely his fault that we were captured. You are the one that drove your mother to insanity, you ungrateful bastard!" she screeched while skillfully directing an unforgivable in his direction. Draco was unprepared, he screwed his eyes shut readying his body for the oncoming pain. However, when a few seconds later nothing happened, he snapped his eyes open. Astoria was currently battling Bellatrix, having abandoned her mission to save her husband. Both witches wore looks of pure hatred and whipped their wands ferociously.
"You will not hurt my family you bint!" Astoria screamed.
He went to go help his wife but was quickly stopped by none other than Lucius.
"Not so fast boy. I've got a bone to pick with you."
As hexes flew back and forth, a young boy crept shakily down the steps, terrified of what was going on. Upon entering the hallway he saw his parents fighting two strangers in the living room. But there was another presence in the manor. Scorpius felt very cold and wrapped his arms around himself. Unnoticed by his parents, a ghostly presence glided towards him, and he began to feel weaker and weaker.
"You were always a disappointment growing up. You don't even deserve the family name." screamed Lucius throwing a particularly powerful curse. The spell hit its mark, slicing his son's side.
"Well father" he spat the word painfully, "I'm sorry I couldn't live up to your preposterous expectations, as for the Malfoy name, I never asked to be your son." He sent a stunning spell, and Lucius fell unconscious. He smiled triumphantly, but quickly turned round at a terrified scream. A dementor flooded the room, making the room cold and gloomy. Bellatrix cackled loudly.
"Aaaah here they are my lovelies, you are going to meet your doom!"
"You mad woman, you can't control them. No one can!" Astoria screeched outraged.
Bellatrix quickly realized that nothing was going as planned as a dementor swooped towards her and began sucking her life force.
"Draco! We need to find Scorpius and get out of here now!"
Draco quickly ran towards her. He was confused when her face turned to one of horror. He was even more bewildered when she pushed him forcefully aside.
He fell to the ground winded. As he turned his head he saw the love of his life, the mother of his child, fall lifeless to the floor as a green jet of light hit her straight in the chest.
In my version Bellatrix did not die during the war but was instead caught and imprisoned at Azkaban along with a few other death eaters.