You can save Malik from being killed in the Heng Sha ambush if you prepare yourself before the mission starts. While in Detroit, stock up on a sniper rifle or tranquilizer rifle, and ammunition for both of them (or weapons already in your inventory), EMP grenades (for the massive bot), and gas grenades. When you land in the Heng Sha ambush, take cover behind the wooden panel where you first start or behind the concrete pillars. Take aim at the heavy troops carrying the heavy machine gun first before you take out the snipers and ground troops. There should be some red barrels near the snipers if you want to conserve ammo. When the majority of the troops have been taken out, a combat bot should appear. Aim about mid-sky toward the bot for an accurate hit with the EMP grenade. Take out the remaining troops you have not dispatched yet and you should hear Malik tell you that the bird is fully operational and will thank you for saving her.