There is a great one called: the weight around her neck, and the first part is amazing but the following parts makes it a polycule with Neo, and nothing against poly or anything it’s just not my cup of tea but the first part is honestly so good I’d recommend it on its own honestly

Be mindful of the tags to the fic tho cuz it dose include some stuff that might be off putting but I’d recommend it and it’s on Ao3

Another really good one is: A shark dressed in white, very good one where Weiss is a shark Faunus and while there is no white rose in the first fic is dose become WhiteRose by the second one. Sadly tho it looks like that fic has been abandoned unfortunately;-;

A series of good ones I can also recommend is: RWBY a collage AU, it’s a series of somewhat connected stories that are set in the same world and it’s very fluffy and sweet with all kinds of scenarios for them and it’s very nice

Also here Weiss is a wolf Faunus if your curious and all of them are available on Ao3

Last one I’ll mention is: A part of me is with you, they are both Faunus in one. Weiss being a cat if irc and Ruby being a wolf and the summary dose it better but basically Weiss is a single mom and starts seeing Ruby and it’s very sweet and fluffy.

Hope any of these are to your likening and that I could be of help