Gabriel, clearly, is that kid — but we don't know who the "her" in that sentence is. Could the mother be Bonnie (Liza Weil), whose child may not have died during birth? Or could the mom be Annalise (Viola Davis), who we thought lost her own baby following a car accident orchestrated by Frank? It would make sense, given that Gabriel somewhat resembles Wes (Alfred Enoch), who Annalise always saw as a surrogate of sorts for her own deceased son.