2010 New York Code
RPP - Real Property
Article 6 - (189 - 207) DOWER AND CURTESY
201 - When deemed to have elected.

§  201.  When  deemed to have elected. Where a woman is entitled to an
  election, as prescribed in either of  the  last  two  sections,  she  is
  deemed  to  have  elected  to  take  the  jointure,  devise or pecuniary
  provision, unless within six months after the death of her  husband  she
  enters  upon  the  lands  assigned to her for her dower, or commences an
  action for her dower. But, during such period of six  months  after  the
  death  of  her  said  husband,  her  time  to  make such election may be
  enlarged by the order of any court competent to pass on the accounts  of
  executors,  administrators  or  testamentary  trustees,  or to admeasure
  dower, on an affidavit showing the pendency of a proceeding  to  contest
  the  probate  of  the will containing such jointure, devise or pecuniary
  provision, or of an action to construe or set aside such will,  or  that
  the  amount  of  claims  against  the  estate of the testator can not be
  ascertained within the period so limited, or other reasonable cause, and
  on notice given to such persons, and in such manner, as such  court  may
  direct. Such order shall be indexed and recorded in the same manner as a
  notice  of  pendency of action in the office of the clerk of each county
  wherein the real property or  a  portion  thereof  affected  thereby  is
  situated.