Ever since the world learned Deerfield-based Walgreens was scuttling plans to sell an abortion pill in 21 states, all eyes have been on the health care giant and its CEO, Rosalind Brewer. Brewer, who has held the top spot for two years, is one of only about 50 women leading a Fortune 500 company. Walgreens has since adjusted its language surrounding its plans, now saying it will distribute the drug, mifepristone, in states where it is legal to do so.