Spoilers - Don't read if you have not seen season 6 episode 5 of Game of Thrones.
In S06E05 of Game of Thrones, we see Sansa and Littlefinger meeting. Here Sansa is shown super-kickass and talks to Littlefinger. However, she is fully aware of the war to come at Winterfell. Given the circumstances it is obvious to hate Littlefinger and not trust him. But having an army of Vale soldiers behind her would be good in the war at Winterfell. Yet she dismisses Littlefinger and vows never to see him again.
Is her hate for Littlefinger more than the chance of getting Winterfell back? Or is she just being short sighted about the prospect of having Vale soldiers behind her?