Why does Liliuokalani signed the act of abdication?

Queen Liliuokalani said ; about the 22d of January a paper was handed to me by Mr. Wilson, which, on examination, proved to be a purported act of abdication for me to sign. it had been drawn out for the men in power by their own lawyer, Mr. A.S Hartwell, whom i had not seen until he came with others to see me sign it. I knew nothing at all about such a transaction until they sent to me, by the hand of Mr. Wilson, the insulting proposition written in abject term.