At the end of "Shadow of Malevolence" (Season 1, Episode 3) from Star Wars: The Clone Wars, Kaminoan healer Nala Se (one of the original engineers of clones) says to Anakin:
General Skywalker, I wanted to thank you for your valiant effort today. Do not take the lives you saved lightly.
However, "the lives [he] saved" were almost entirely (not counting Nala Se, it should be entirely) clone lives, and Se is also quoted as saying (straight from Wookieepedia):
You were created in our laboratories. You are Kaminoan property.
-- Nala Se, to CT-5555 src
She held no regard for the lives of her clone creations beyond their usefulness to Kamino and the Galactic Republic. From Nala Se's point of view, clones were disposable assets and the property of their creators.
So why does Se suddenly care about the lives of the clones to the extent that she is willing to sacrifice her own?