@kltigerm, not sure about US but the news articles that good samaritans lost the legal cases I read about weren't in US, luckily after many cases they did start implementing some adjustments to their legal policies to prevent system loopholes-abuse, didn't dive deep into the technicalities/effectiveness and all similar cases etc though, I did read before the cases of suing in US that the plaintiffs lost. With that said, pretty sure it'd happened before in US just as anywhere else before. Even with the legal protections (US or not), there are still people knowingly trying to sue the involved good samaritans to get money out of it to cover their medical bills, and whether they win or lose their cases is another matter of concern but they'd have already caused lots of damages and distress to the samaritans' life. The cases I read were mostly related to former/off-duty lifeguards, and helping strangers who fell down on the road, the motivations were usually for money...
I do agree with
@Zikakuto points though, the case in this story and many cases are not that black-and-white and can be he-said-she-said complicated messy situations (which is why I said it's a mess FL is in) especially when there's no witness (which is why I said some caused lots of damages and distress to the actual samaritans in terms of reputation, time and money to continue the long legal battle). The Queen is actually just doing her job protecting her employee as the boss especially since there's no witness at all so and luckily the scribe is not a bad person (I can totally see such kind of evil characters portrayed by the "heroine" in the "villainess" mangas if you know what I mean lol), but the damage is done. The judgement at the end is questionably unfair though since it should have been cleared by the supposed victim herself and it's an oversight from the employer's part that there's overworking caused by poor HR management and yet there's an unreasonable punishment for FL decided (and so the way I see it is probably that it's a test/trial for FL to prove her abilities to everyone in the palace and gain a firm standing and her backing so that she won't be targeted by other nobles etc if she succeed and have the queen's backing now that this case happened, and if she gives up at least the queen has given some sort of punishment that other nobles wouldn't say she favors a commoner over a noble daughter and traditions and reputations etc yada yada causing some political consequences). It's quite the situation of good intention wrong approach and it's a lesson for FL and it'd be a character development for FL too on her ambitious journey to be the cannot-be-naive-anymore queen of merchant world, and inevitable too in her revolutionary efforts for female/civil rights in the culture and industry while disguising as a male like Mulan. It's a good mini arc albeit frustrating. Generally, a story about a commoner (with no supernatural abilities set in a fantasy world with supernatural things) getting involved in medieval-inspired palace/castle/royalties are inevitably going to get involved in messes because politics and that's very logical for me, and this mini arc is probably just a start, as usually many MCs in other isekai series skip that because they are highly-regarded special beings with special abilities/statuses, or that they are abandoned for unsatisfactory/unexpected special abilities/statuses as summoned beings. The story is gonna get more interesting and I'm excited to read future chps.
With all that said, what I think the most we can do for strangers as average non-professionals is just call for help from relevant official professionals (ambulance, firefighters, police etc), only consider saving after calling for help, get witnesses gathered and acknowledge your approaches, it's really an emergency with short life-saving window, have the right knowledge/steps of CPR or whatever, and in public.
Sorry for the lengthy comment, thanks for reading 😅