Yeah, you have to let her take her time and let her decide how she wants to end it. She never said last night that no matter obama has clinched the nomination; I will still go to Denver for convention.
As for congratulating Obama, this is what she said:
Also check this clip from this morning, Hillary addressing AIPAC and she is wholeheartedly supporting Obama.
http://www.cnn.com/2008/POLITICS/06/04/obama.aipac/index.html#cnnSTCVideo