Yes. He was on something that Tera was certain of. The man took the stab in the elbow far better then anyone else would have been able to do, lunatic or not, unless they weren't in a state of mind to feel pain. Luckily, it wasn't the first time she had to face down drugged up killers before. Smuggling drugs in lead to many cases of those types of enemies. Sometimes they were simple poor addicts trying to steal, other times it was one of her own men with a serious addiction, and rarely, another gang was trying to move in, and one of them had a serious problem.
The stab wasn't to cause him to drop his cleaver, but to stop him from being able to really use his arm as the joint was being held on by two flaps of skin around a very large hole. His response did surprise her in that she hadn't expected him to drop the knife. A normal man would have from the pain, but someone high on adrenaline and whatever else he had in his system? No, but it was an added bonus. It, effectively, eliminated him as a threat in her mind.
His bloody hand covered her much smaller wrist, with a bone crushing force. Tera ground her teeth together as he had one hell of a grip, but this wasn't the first time this had happened. Many people let themselves be stabbed to take the knife away, letting go with right hand, she shot her left up and tore the knife from his elbow.
The boy was leaning against her, but Tera wasn't a meek woman, and his change of stance told her he was trying to do something with his leg. A knee would be the most effective, but she doubted he would instinctively due that, and so her mind instantly placed it as a kick of some sort, but her mind, trained from many life and death brawls, had three options. The first was to thrust the knife straight up under his jaw and into his brain, the second was to smash her forehead into his nose and slice open the wrist he held her right arm in, the final was to push him. With him on one leg, it would be easy to topple him. The first and last were thrown out as she didn't see the need to kill him yet, and the last would require her to grapple with someone high on some kind of adrenaline which she wasn't a fan of. All of this done in moments in her subconscious, and she instinctively acted upon it.
There were many parts of the body that could not be strengthened. The nose was one of those. Rearing back her head, she slammed it forward aiming at the soft, and very fragile, nose intending to cause excruciating pain and blind him in one go. The second her head connected, she would slice open his wrist.