My sister get married in NuevaViscaya when her age was between 18-21 years old. This happened without my parents consent. After she gave birth to her first child she planned to leave her husband and go back home to my parents in Mindanao. But when they knew my sisters plan, they forced my sister to sign a form which was a child abandonment through the lawyer that happens to be her husband's relative. My sister was alone there, very young and vulnerable at that time to any threats from his husband's family. My question is, if that signed form was legal, is there any way that we can void it? What are the grounds and process of child abandonment? What effective legal measures we can do to get her child back to her custody if that signed form is legitimate?

There is no way to really force her, it was her choice, that she now regrets. While it is a poor situation. She can try, to hire an attorney and ask for a court hearing, but how will be the witnesses and what legal proof does she have that she was forced? Was there threats of harm? Will her ex husband family testify what they did? Will the lawyer who did it, tell how it was forced? (I doubt it) Who was with her, that saw this happening?

She will at least need a GOOD lawyer. Good luck, she will need that too!