Elliot S! Maggin's "Last Son of Krypton" beats them all because it shows Lara's strength in those final moments. But then I'm biased. The whole chapter detailing the loss of Krypton - Hell, the whole book - should be read, but here's the last bits of the first chapter so as not to overly spam:
"Jor-El. What are you doing?" The scientist's young wife Lara stood in the doorway of the workshop wrapped in a housecoat. She carried Kal-El, their son, in her arms.
"We're going to have to leave before dawn. Go back to bed and let me finish this thing."
"Jor, I woke up when I heard the baby crying and I found myself alone. Now I find you in here, telling me we're going to leave our planet—our planet, for the love of all that's holy—before dawn. You want me to go back to bed?"
"You have the choice of sleeping or winding yourself into a frenzy. If you choose the latter, I suggest you do it somewhere else, because it will only hinder my work." Jor-El didn't look up from his tinkering.
"You've already worked yourself into a frenzy, Jor. And you've lost your perspective because of it." The infant in Lara's arms began to whimper.
"Go back to bed, woman." Jor-El snapped on a pair of goggles and picked up a liquid mortar burner to weld.
"You may have observed that women have not been at their husbands' command for several centuries now. And if you turn on that burner while I'm talking, you may also notice—"
He turned it on and Kal-El began to cry at the sudden noise.
Lara was about to turn off the geothermal generator from which the burner drew its power when a tremor shook the burner from Jor-El's hand. Before the burner hit the floor the generator was dead. The tremor had severed the generator's line to a power source below the surface of the planet.
"Damn!" Jor-El glanced toward the makeshift launching rig already set up in the open bay window of the workshop. "Look out there, Lara. The spire over the Science Council chambers is toppling."
"I hear crashes from all over. What is it, Jor?"
"You'll soon hear screams in the streets as well. Put the child down and help me set up that prototype craft on the launcher. I wouldn't have finished the big ship in time, anyway."
"But that little thing—it's only big enough for one person."
"Two, if they squeeze a bit. Give me." Jor-El gruffly took the howling infant from Lara and placed him on a workbench.
"What do you think you're going to do with this toy, Jor?" Lara helped him set the seven-foot prototype starcraft on the rig at the window.
"Send you and the child into space. Here, let me get that navigational unit off the big ship's nose."
"No, you're not."
Jor-El ignored her and went about fixing the little silver navigational mechanism to the tip of the child's craft, ready to separate and eventually fly several light-hours ahead of the main unit.
As he did that, Lara found two musty blankets in a closet. She wrapped the red and blue blankets around the infant, who was already struggling in a yellow sheet.
Jor-El finished a few final calculations and turned to his wife. "Get aboard, Lara."
"My place is with you. The ship will have a batter chance of escaping Krypton's gravity without my weight, anyway."
"Your place is wherever you can survive—and that isn't here."
"Remember what we named our son, Jor? Kal-El meant 'star child' in ancient Kryptonese."
"An accident of language. Get on."
"No. I am a Kryptonian woman, and Krypton is dead. Give the child a chance."
Jor-El wasn't surprised, only disappointed. He pulled a prepared recording disc from a shelf and slipped it into a slot on the navigational unit.
"My dear God," Jor-El whispered as the rocket carrying its tiny burden lifted off amid the crashing of metal and rock. "May the starwinds guide your course, Kal-El."
And the vacuum of space muffled the star child's wailing as a giant world ripped itself apart.