Understandable and I know what you mean.....they're young and inexperienced in catching food lol.
That's cool that the frog you rehabilitated recognizes you and comes up to you. It shows that frogs have intelligence and can remember things. If you notice that she doesn't start to hibernate soon or like you said, appears malnourished, that would be a good idea to bring her back in and maybe safe her life again .

I will definitely let you know if/when I make the WF care sheet !