That sounds pretty awesome. How did she take out multiple Stormtroopers with one action? In Saga, you would need a lot of multi-attack feats like Double Attack, Triple Attack, Cleave, Follow Through, Great Cleave, etc....
Lightsabers are supposed to be devastating. But aren't Stormtroopers supposed to be lame cannon fodder?
Well, the Lightsaber in FFG's system does a flat 10 damage + number of uncancelled successes on the attack roll (no bonus for strength or dexterity, but when a vibro-axe's damage is 3 plus strength bonus + uncancelled successes, the lightaber doesn't need the extra help), but it also has Breach 1, which enables it to ignore up to 10 points of Soak Value (what characters use to reduce damage taken, much like DR). A Stormtrooper has a Soak Value of 5 (or DR 5 if you prefer) and 5 "hit points"*. And minion groups operate similar to squads, in that a group of minions is considered a single entity, which each minion after the first providing a free upgrade to dice pools using skills relevant for that group; stormtroopers have Ranged (Heavy) as one of their minion group skills, so a minion group of five stormroopers would get four upgrades when shooting with a blaster rifle. And unlike Saga Edition squads, minion groups in FFG's system can easily be scaled up or down as the GM feels is appropriate to the encounter. And each time the PC deals more damage than the base Wound Threshold of the minion type, the minion group is reduced by one. So for a stormtrooper minion group, if you deal at least six points of damage past the minion's Soak Value (which is only applied once per hit, no matter the size of the minion group), then you drop a stormtrooper, which means that's one less upgrade to their skill checks when it's their turn to do something.
The other thing with minions is that a critical hit automatically takes them down so long as one point of damage gets past their Soak Value; you could drop a stormtrooper with a hold-out blaster if you manage to score a critical hit against them. And it bears noting that lightsabers are ridiculously easy to trigger a critical hit with.
So, for the Jedi lady, she rolled a few successes (I don't recall the exact number, but less than 5). Since the lightsaber's Breach 1 lets it blow right through the stormtrooper minion group's Soak Value, she deal enough damage to exceed a stormtrooper's base Wound Threshold twice, dropping two of them outright. She was also able to trigger a critical hit, instantly dropping a third stormtrooper. If she'd only rolled a couple more successes, she would have taken down the 4th stormtrooper as well.
Given she was about on par with a 3rd level Saga Edition Jedi in terms of her lightsaber combat prowess, that was pretty impressive, and didn't need to spend any character resources (aside from having two skill ranks in the Lightsaber skill).
*one thing to keep in mind is that Wound Thresholds are much, much lower than Saga Edition hit point totals. A starting PC will be lucky to break 20, and even that's only if playing a Wookiee; most everyone else will be hovering around 12 to 15 for their starting Wound Threshold.