La. Civ. Code art. 1479
Current with changes from the 2024 Legislative Session, Acts 3, and 6-86
A donation inter vivos or mortis causa shall be declared null upon proof that it is the product of influence by the donee or another person that so impaired the volition of the donor as to substitute the volition of the donee or other person for the volition of the donor.
La. C.C. § 1479