I was the same way with my photos but best thing is to just dive in head first. Worked for me. Only reason i havent posted anything new in a while because my camera lens broke and i didnt have the money to replace it lol
If she lacks confidence in her presence her from lack of feedback on DA, that's because to get any real feedback here you need to be socially active. If you're not advertising your avatar around, no one will have any reason to go to your page be it as a friendly face, someone with reputable art or whatever simply because they don't know you exist.
In any case I visited and left some things, but if that's the case you might want to suggest to her to use groups for her artwork so more people see it and to be involved in the community in general.
No, I'm not advertising my own avatar/profile around nor did I intend to. My sister's rather shy when it comes to her artworks and I really wanted to give her a boost in a way, get people to notice her and all... maybe it's just me being the overprotective/encouraging big sister that I am lmao