Personally, I like to have the character scream loudly and hysterically, as you were saying you are trying to portray, before quickly quieting down. This strong contrast may help get how loud the scream was across.
Azylo clenched her fists by her sides. Her entire body heaved as long sobs poured out of her mouth and she now used one hand to grab onto her shirt. She heaved forward once more and cried out hysterically, “don’t abandon me!” ... She continued to shake profusely, her eyes were blurry and heat consumed her. She felt completely helpless. But her voice quieted now, to just a whisper between heavy breathes and hot tears, “Scarlet, please don’t leave me.” It was helpless, she was already long gone.
Azylo clenched her fists by her sides. Her entire body heaved as long sobs poured out of her mouth and she now used one hand to grab onto her shirt. She heaved forward once more and cried out hysterically, “don’t abandon me!”
...
She continued to shake profusely, her eyes were blurry and heat consumed her. She felt completely helpless. But her voice quieted now, to just a whisper between heavy breathes and hot tears, “Scarlet, please don’t leave me.” It was helpless, she was already long gone.
