Glinda gave that ugly black hat to Elphaba as a prank. Why, now, does she feel so guilty? And when she tries to apologize, only for her friends to silently threaten to disown her if she does, will Glinda have the bravery to stand up for what (and who) she believes in? It doesn't seem so, but who knows? After all, life could end up changing... (Just the ballroom scene written out).