I feel Terri's problem was with Kaine.Not little Kyron.I don't think she hurt Kyron.But I may be wrong.
You might find this article about domestic abuse interesting. Specifically, look under 1.6 Abusive Tactics
Abusers frequently involve the victim's children in their efforts to assert control. Some abusers kidnap, sexually abuse, or physically harm the victim's children, or threaten to commit one of these acts. Others initiate or threaten to initiate court proceedings to remove the children from the victim's home, or use court-ordered parenting time as an opportunity to harass the victim.
http://jec.unm.edu/resources/benchbooks/dv/ch_1.htm
Lethal violence may occur unexpectedly, without any advance warning from the abuser's behavior, the presence of the following factors can signal the need for extra safety precautions - the more of these factors that are present in a situation, the greater its danger.
The victim (who is familiar with the abuser's patterns of behavior) believes the abuser's threats may be lethal
The abuser threatens to kill the victim or other persons.
The abuser threatens or attempts suicide.
The abuser fantasizes about homicide or suicide.
Weapons are present, and/or the abuser has a history of using weapons.
The abuse involves strangling, choking, or biting the victim.
The abuser has easy access to the victim or the victim's family.
The couple has a history of prior calls to the police for help.
The abuser exhibits stalking behavior.
The abuser is jealous and possessive, or imagines the victim is having affairs with others.
The abuser is preoccupied or obsessed with the victim.
The abuser is isolated from others, and the victim is central to the abuser's life.
The abuser is assaultive during sex.
The abuser makes threats to the victim's children.
The abuser threatens to take the victim hostage, or has a history of hostage-taking.
The severity or frequency of violence has escalated.
The abuser is depressed or paranoid.
The abuser or victim has a psychiatric impairment.
The abuser has started taking more risks, or is "breaking the rules" for using violence in the relationship (e.g., after years of abuse committed only in the privacy of the home, the abuser suddenly begins to behave abusively in public settings)
The abuser has a history of assaultive behavior against others.
The abuser has a history of defying court orders and the judicial system.
The victim has begun a new relationship.
The abuser has problems with drug or alcohol use, or assaults the victim while intoxicated or high.
Rygwelski, above, p. 49-52; Walker, et al, Domestic Violence and the Courtroom: Understanding the Problem ... Knowing the Victim, p. 4 (American Judges Foundation, 1995).