What are Theresa May's options?

Press quote (The Financial Times)
Sam Lowe, John Springford
17 January 2019

“Most probably, May will attempt to amend the withdrawal agreement and political declaration and then push the subsequent parliamentary vote to the wire. To pass her deal, the threat of no deal will need to be tangible, and for that to happen the March 29 deadline will need to loom large.” (Sam Lowe, senior research fellow, and John Springford, deputy director, of the Centre for European Reform)