The idea that she would make more right out of college if she decided to not play in the WNBA and simply got a "normal" job using her degree isn't accurate in my opinion. I also don't think $45,000 for 4months of work is terribly low.
Of, course I wish someone of her talent got paid closer to that of her NBA counterparts. However, the veteran minimum has increased significantly since the last time I checked, so that is a positive sign.
On a side note, the top history, anthropology or political science majors coming out of undergrad aren't going to make boatloads of money in year 1 although they will likely get a nice Fellowship to help as they pursue a PhD. It all depends on the field.