I would never give a music instrument to any family or friends without having them try it first. For example, in your case one of the flutes has an extended range due to the B foot. A surprising number of flautists don't appreciate it. I do, but then I'm weird that way.
When I started my wife back on clarinet (and eventually flute and sax) I brought in a used high-end clarinet. She hadn't played in +25 years and asked me why her student grade instrument wasn't good enough. So I had her play the full scale of the instrument with a tuner and I marked the deviance from in tune. Then I had her do that with the professional instrument. The student instrument had a deviance from -20 to +15. The pro horn ranged from -5 to +5. She like the sound of the pro horn too, so it was a done deal.
Now she is my best sub for the big band, sax quartet, and theater gigs. I see so many community musicians with horrible instruments that weren't good when new and/or are horribly out of shape. True musicians need nice instruments if you ask me. But let them be a part of the selection process.