You can make her fatter...yes. You can't really make her thicker, stouter or bigger volumed. She does look feminine, and she looks pretty correct. Soundness is a big deal, and feeding her & developing her to her greatest potential is really all you can do. I'm not trying to be overly critical, but I do think she needs more rib. And sometimes they change...I've seen some pretty spindly looking heifer babies make big ribbed yearlings...that depends on her genetics & her development. So good luck! Hope she just gets better as she does get older.