the 1st option is the well-known version I know.

However, if you're looking for something less dramatic, the 2nd option would fit the bill (ie, leave the poor girl to look after herself)


Some g-hits for the 1st option:

HIS BIG "BEAT" GOT HIM INTO TROUBLE; Green Reporter Boasted He Was ...To make matters worse, the newspaper in question has abandoned him to his fate, and the doctors in Bellevue arc enjoying themselves at the expense of their ...
query.nytimes.com/gst/abstract.html?res=F1081FF93F5911738DDDAC0994DA415B808CF1D3 - Similar
An introduction to Islam - Google Books Resultby David Waines - 2003 - Religion - 367 pages
upon the shame felt by those who had only half-heartedly supported al-Husayn, or had even abandoned him to his fate. This son, Muhammad b. ...
books.google.co.uk/books?isbn=0521539064...
Literature.org - The Online Literature LibraryBut before I abandoned him to his fate I flung his pony's bridle over a stake in the hedge, and threw him my handkerchief, as his own was now saturated with ...
www.literature.org/authors/bronte-anne/the-tenant-of-wildfe... - Cached - Similar
Visar ZHITIOn his return to Albania, he worked as a journalist and was appointed head of the Naim Frashëri publishing company, which had once abandoned him to his fate ...
www.albanianliterature.com/authors_modern1/zhiti.html - Cached - Similar
The Legends of the Jews Volume 4 - Google Books Resultby Louis Ginzberg - 2004 - Religion - 272 pages
But finally the renewed rage of the storm convinced them that their danger was due to Jonah's transgressions, and they abandoned him to his fate. ...
books.google.co.uk/books?isbn=1419169092...
The Melting pot Good Books: Restavec Haitian Slave childHis father Philippe though ashamed of him never abandoned him to his fate. This is quite the exception to the rule in the saga of the life of Haiti's slave ...
www.the-meltingpot.com/restevec.htm - Cached - Similar
$temp$ SENDTYPE: SFGATE = SIZE: 0 = SLUG: BORGES08 = DATE: 08/08 ...... Jorge Borges Sr. provided him with literature ("His father had given him the run of his library but had then abandoned him to his fate, as it were, ...
www.sfgate.com/c/a/2004/08/08/RVGCL7UQ5P1.DTL - Cached - Similar
Letters of George Borrow to the British and Foreign Bible Society - Google Books Resultby George Borrow - 2006 - Religion - 272 pages
... and having feasted their ears for a time with his cries, they abandoned him to his fate. The poor wretch, stung by the vipers in the face and eyes, ...
books.google.co.uk/books?isbn=1847028152...
UNIVERSITY PRESS Rhawn Joseph, Ph.D. Jesus Christ The Passion The ...His followers, his 12 disciples, had abandoned him to his fate. Even Peter, "the rock" who at first offered minimal resistence, would run away and hide, ...
brainmind.com/JesusChrist28.html - Cached - Similar
Torquemada (comics) - Wikipedia, the free encyclopediaHe became insane when he was ambushed by the Monads and Torquemada abandoned him to his fate instead of helping him. Torquemada had him committed to a ...

another option - to desert someone is to abandon them.