it will add several layers of complexity that she is not ready to deal with. Discord is a pain to get working well and doesn't have all the features the Windows version does, running recent games through Proton can be very GPU intensive, and I have no idea how OBS will interact with anything (I've heard bad things about using it on Wayland and I haven't tried on X11). That's all assuming vtube studio and any additional software works at all, because all of the chuubas I watch are far too tech retarded to come near any linux box.