After running away for quite a while, Ma Jin can see the woman pale sweaty face in the corner of his eyes while the hand grasping his body has already begun to shake, there is even a stumble to the way she continues to run away.
In the end, the damage has done to her wrist and ankle is taking its toll along with her body that hasn't been trained for years despite having internal energy to help her move skillfully.
Even being kept captive, Ma Jin can perceive how completely stressful and exhausting it was when using internal energy on a broken body, which has quickly caused a cold calculated light to flash in his eyes.
As long as the woman doesn't kill him, then he has a high chance of surviving, especially when the guard he took is specialized more in pursuing along with quickly asking for assistance when it's needed.
So the woman leaving the guard before without eliminating him is definitely a huge mistake!