Your Ruby is absolutely golden, and she really just makes any and every bit of the stay at Marrowood all the more worth it for anyone she's around it. She's the kick ass friend giving everyone that extra push of love, encouragement, and sass kick in the pants to do what they need, and inspire them to do the things they didn't think that they could--taking what we know and love from both Red and Ruby and comparing what she's known and grown into (even if the show has decided that wasn't worth continuing).
I know you're branching out with her more via Stiles and Lavender but I sort of feel like she's been sidelining herself--much like she does in the series, but I feel as though Ruby is deserving of a shining moment. One where she can not feel worried about getting someone hurt or being a liability, but where she can be like HELLS YEAH ME. I dunno.
More Ruby plots, with everyone, I think would be great. Just quit having real life shit and priorities is my critique, I think.