From Star Wars wikia:
http://starwars.wikia.com/wiki/Leia_Organa_Solo
After the battle of Mon Calamari, Palpatine and a broken Luke arrived in his flagship, the Eclipse at Pinnacle Base, where the New Republic was celebrating. While Leia was studying the Holocron in her quarters, the simulacrum of Bodo Baas told her a prophecy written by his Master, which foretold the upcoming events. Palpatine demanded the presence of Leia and the return of the Holocron. Leia met with the Sith onboard the Eclipse. Luke then implored for Leia's help in shaking off the Dark Side. Leia aided him and Luke managed to return to the light. Palpatine was enraged and engaged Luke in a brutal lightsaber duel. As Leia observed their duel, she gave energy to Luke through the use of battle meditation and together they were able to subdue Palpatine. When Palpatine summoned a Force storm against the New Republic fleet in retaliation, Luke and Leia summoned a wave of light side energy and enveloped Palpatine in it, cutting off his control of the storm. While the storm destroyed Eclipse and Palpatine, they fled.[87]
BodoBaasHolocron EGTF
Leia probes the holocron of Bodo Baas.
After the death of Palpatine's clone on Byss, Leia returned to Nar Shaddaa to remove Vima and extract from her knowledge of the holocrons and the destroyed Jedi Order.[88]
In 10 ABY, Leia helped her brother defeat Palpatine through the use of her natural talent with battle meditation; at this time Leia had little Force training and her ability to use such a powerful Force power is indicative of her strength in the Force.[87]
Still untrained, Leia was able to shield her infant son Anakin, from Palpatine's disembodied spirit, preventing the Sith Lord from possessing the child.[15]
Originally posted by FreshestSlice
Yoda. Luke was being aided by Leia. "Unlocking potential," Luke didn't even know he had. Not really Battle Meditation, but definitely not Luke aone.
Don't have my copy of DE on me, but pretty sure that's when they were overpowering Palpatine's Force Storm. She certainly aided at that point. But I also don't believe she contributed to the Lightsaber duel.
Her aid at that point was in helping Luke to sway away from the Dark Side and stay on the Light Side IMO.
Originally posted by Nalaniel
I don't think Wookieepedia is such a reliable source. 😬
Correct.
Originally posted by Angelalex242
You have little reason to say so, when Wookieepedia is quite diligent about citing its sources...hence, all the little numbers you see whenever it makes a statement.Wookiepedia generally treats itself like a term paper written for a teacher who is very strict about citing sources.
Wookipedia citing sources is no different to when one of us cites a source.
Either way you still need to refer to the source itself as evidence, and not wookie.