What does the underlined sentence mean?

And now Carrie had attained that which in the beginning seemed life's object, or, at least, such fraction of it as human beings ever attain of their original desires … Applause there was and publicity 一 once far off, essential things, but now grown trivial and indifferent. Beauty also 一 her type of loveliness 一 and yet she was lonely. In her rocking-chair she sat, when not otherwise engaged — singing and dreaming.
What does the underlined sentence mean?
【正确答案】：

SHE WAS DREAMING OF THE BRIGHT FUTURE. ALTHOUGH SHE WAS OFTEN DISILLUSIONED, SHE WAS NOT AT ALL IN DESPAIR.

【题目解析】：她梦想着光明的未来。虽然她经常幻想破灭，但她一点也不绝望。