For Want Of A Nail: In the second film, Valka's vigilante activities were geared towards Drago directly, mainly undermining his hunter-lackeys like Eret. Here, Valka instead undermined the Grimborn brothers, whom her canon-counterpart has had no interactions with.
Mundane Utility: Diego's gift makes him ideal for search parties. A group of clones are assigned to every individual search party, so if one group finds evidence of the triplets, them all know instantly.
Pity the Kidnapper: As horrifying the thought of the triplets being kidnapped are, the extended Madrigal Family console themselves with the fact that chaos tends to follow them, and thus their kidnappers will suffer for as long as they have them.