Reading a book in Japanese. Can't figure this sentence out. Please help?

Question:

First thing, please do not use translators; they aren't helpful in this case.

The sentence is this:

ケスリーにとって、冬が二月はしないと終わらないのだと思い出すのはつらかった。

Kesurii ni totte, fuyu ga futatsuki wa shinai to owaranai no da omoidasu no wa tsurakatta.

I seem to know these words separately, but I am unable to put the sentence together. Could someone please help?

Answer:

It was painful for Keslie to remember that winter will not end in more than 2 months.