What were the influences that transformed Liza Doolittle in "Pygmalion"?

A couple
of influences that transformed Liza Doolittle inare Higgins, obviously, and Liza's desire to
please him.  Higgins made Liza his experiment, simply to prove he could turn a rather rough
around the edges lady into a proper, classy lady.  As he worked with Eliza, he found that his
feelings changed and it became more personal instead of experimental.  Also, Liza, in the
beginning, wanted to please Higgins and she tried very hard to make the...