hi ferds, si ate mo, hindi siya ang ABSOLUTE owner ng isinanla niya kasi may mga co-heirs pa siya na dapat may pirma din ninyo para maging valid yung sangla/pledge
Article 2085. The following requisites are essential to the contracts of pledge and mortgage:
(1) That they be constituted to secure the fulfillment of a principal obligation;
(2) That the pledgor or mortgagor be the absolute owner of the thing pledged or mortgaged;
(3) That the persons constituting the pledge or mortgage have the free disposal of their property, and in the absence thereof, that they be legally authorized for the purpose. Third persons who are not parties to the principal obligation may secure the latter by pledging or mortgaging their own property. (1857)
your ate can only dispose of her SHARE but not the entirety of the land as it will prejudice the remaining compulsary heirs.
furthermore, yung pinagsanlaan ng ate mo, hindi magkakaruon ng right yan kahit mag demanda pa siya kasi incumbent sa isang buyer ng lupa na mag inquire kung may lien or attachment yung lupa or may mga rights na ma-a-apektuhan. kung mabilisan ang bentahan nila, presumption yan, bad faith ang nagsanla at yung pinagsanlaan.
i suggest you hire the services of a lawyer to protect your rights. good luck po