Susan does wonder how she might respond if Lucy were to ask her directly to make things right with Aslan. On many levels she's not fond of him, beginning with her own barring from Narnia going straight through to being punished for adapting to the very same, and ending with him causing the death of almost everyone she loved in London. The only good thing he's done is letting her live, though she imagines his reasons for and interpretation of that choice are radically different from her own.

"Has Sunny asked you to improve that relationship?"