Nope. The comic doesn't make it clear either way. Yes, she does appear to be glowing but that could just as easily be due to the art style as other characters seem to glow at different times as well.
As for the audio drama.
Sound: The Emperor's own lightsaber activates.EMPEROR: So be it. Through the power of the Force, you will DIE!!!
Sound: The Emperor lunges at Luke--who activates his own lightsaber and blocks the blow!! A vicious duel ensues between the two. Both grunt and yell as they lash out.
LEIA: Be careful, Luke! The Force is strong....they're both moving so fast, I can hardly see them....I feel waves of power....the Dark Side and the Light.....But......I feel......the Light.....is winning!!
Sound: One blow finally lands---and something thuds on the floor as both lightsabers deactivate!
EMPEROR: NNAAAAARRRGGGHHH!!!! MY HANDD!!! YOU'VE CUT OFF MY HANNNDDDD!!!!!!
LUKE: NOW, "Your Highness," we will escort you to the Alliance base, where you will surrender the Galaxy to the New Republic!!
EMPEROR: (long pause) Look at you. Don't think I don't know your plan.
Sound: A far-off roar begins in the far distance.....the same noise that spirited Luke away from Coruscant.
EMPEROR: The Dark Side HAS you. You intend to rule the Galaxy, in my place. But....utter imbecile that you are....you have STILL failed to understand MY POWERRRR!!!!!!
LEIA: (hearing the noise) What's happening?!
EMPEROR: Watch the viewscreen!! And listen as your friends DIE!!!!
Sound: The sound becomes louder......and moving lower.
LUKE: He's created another storm!
LEIA: It's descending on Pinnacle Base, consuming all the ships in its path! (rushes to the comm console and activates the comm) Mon Mothma, can you hear me?!
MON MOTHMA: (on intercom, shouting to be heard) Princess Leia, there's an energy storm! It's suddenly taken over the planet!! We have 12 ships lost already!!! All our hands have been lost--we're being wiped out!!!
HAN: (on intercom) LEIA!! LE-----(ominous static)
LEIA: (tightly controlling her anger) You're going to SLAUGHTER all those people!!
EMPEROR: Yes. Did I not warn you? I've played your Jedi dueling games long enough. Now, you will experience my FULL potency. I live as energy!! I AM THE DARK SIDE!!!!
LUKE: What have you done....? The power you've unleashed....even YOU can't control it!
LEIA: But WE can, Luke. WE can do it. That's what the Holocron meant. Let me add my power to yours.
EMPEROR: Yes. Waste your time on stupid Jedi tricks. The storm will crush your Rebel base to dust.