Separation is believed to be an antidote to risk abusers pose to their partners and children and underlines many interventions in family, juvenile, and criminal court proceedings. Countering this belief is the claim that many abusers respond to the felt loss of power and control occasioned by separation by changing or escalating abusive tactics. This study complements research on post-separation by asking whether separation is associated with an increase in threats of indirect abuse, which relies on third parties to manipulate the victim. Children, and threats made against them, can be used as a proxy to control or intimidate the victim. Using data from the Chicago Women Health Risk Study (N = 339), the current study examined whether mothers who were separated were at greater risk of abuse through threats against the children when compared with mothers who were still in a relationship with their abuser. Results indicated that separated mothers were four times more likely to report threats to take and threats to harm the children, Exp(B) = 4.05, p < .05; Exp(B) = 3.93, p < .05, than non-separated mothers. Findings can be used to inform child custody procedures and the design of Family Justice Centers.