Time to regret her life decisions 

[Name] choked away a sob as she swung herself over the railing of the boat with enough speed that she plunged straight into the water, sinking quickly enough to avoid anyone going in after her or attempting to pull her out. The swirling water brought her a sense of calm she couldn't have above or around either of the boys who had attempted to stop her. Moving her arms the water shifted around her, wrapping gently around legs and pushed her forward. It would take her close enough to get in and out of the fight easily but she was concerned, who else might figure out who she was? She pushed her thoughts aside, this wasn't the time and there were more pressing issues at hand, [Name] had agreed to do this so it was her problem to fix. 

Shockwaves shook the water the closer [Name] came to the shoreline and the fight in the central plaza. Internally she wished to see her moms, to let them take her back, stop her from doing something stupid that could get her killed. But they couldn't, they had a job and they love and support her they would be risking their own lives to protect her's and [Name] hated it. [Name] hated having to depend on others, she hated that she had a hand in peoples deaths, she hated that they had something to use against her. [Name] hated that she had something that reminded her of a personal hell. Squeezing her eyes shut she pushed everything away, nothing mattered except the fact that she needed to stop the assholes trying to kill her classmates and it didn't matter if she got hurt. [Name] helped cause this so she would end it.

[Name] shot herself upwards in a jet of water, flinging herself towards the plaza. Her body landed with a crunch, pain searing through her ankles. [Name] gritted her teeth, she'd done worse and she could take care of it later. [Name] slowly began to assess the situation, most of the villains were focused on the remaining students, leaving her mainly unnoticed while those who did merely motioned to the remaining locations attempting to keep their attention on the students trying to make an escape. Stepping forward she to finally get a clear view of her teacher, her heart sank and bile rose in her throat. 

A monster- a purple mass of muscles with an exposed brain sat crushing Aizawa. His body was crumpled and bleeding, a sickening crack embedded itself inside her mind as what she could only presume was the Nomu she barely heard whispered about in the bar, broke Aizawa's arm and slammed his face into the ground. [Name] felt her back pang with pain as memories of harsh training sprung into her sight. Sweat dripped down her forehead and she gritted her teeth, this wasn't the time. Swallowing she began to run, heart racing she squeezed her eyes shut, Shigiraki's hand inches away from Aizawa's face. 

[Name] made impact. Her foot collided with his arm stopping him from making contact. Panting name landed, skidding on her knees she struggled to attempt to stand. Her ears were ringing as the Nomu began to stand, moving away from the two. [Name]'s vision swam as bullets of water began to form in the air and before she knew it Shigiraki was in front of her. "Now I wasn't expecting this, what did you think you were going to achieve?" a hand wrapped around her throat and lifted her upwards, a single finger away from searing pain. 

"I- I don't want them hurt." Shigiraki cocked an eyebrow in a mixture of confusion and amusement as he gave out a hoarse laugh.  

"A vigilante trying to save hero wannabes? Or are you just overprotective of your game of cat and mouse between you and Eraser Head?" [Name] writhed beneath his grasp as it grew tighter, bubbles dropping to the ground. "You won't have to worry, you're interesting enough be my next plaything." She felt her blood freeze and her mind went blank, she raised her foot and kicked him square in the chest. Shigiraki stumbled back releasing and dropping her to the ground.

[Name] quickly rushed to Aizawa, fuck the creepy hand bastard but Aizawa's condition was more serious. [Name] hesitated, hands shaking as she began to attempt to clot his wounds to stop the bleeding. Her skin crawled as the blood began to move at her command before something stopped her. A tight grasp rested on her arm and all her movement fell still, Shigiraki stood over her a sickening grin plaster across his face as he pulled her back. [Name] attempted to kick him, claw at him but he wouldn't let go. "You're quirk will be more useful if you stop squirming but I will need to punish you for your little stunt." [Name]'s eyes grew wide as he pressed the final finger down onto her arm and her suit begin to crack. Then her skin began to tingle, then that cracked too. A screaming rang out, echoing throughout the building, glass shattered and Shigiraki was blown away. 

[Name] was sat shaking, tears flowing from her eyes as she clutched onto her arm. Desperately she tried to use her quirk but nothing happened, no water formed and her blood continues flowing from her open wound. A blast sounded from nearby, but she didn't care it all hurt too much. A hand was press against her shoulder and she jumped, pulling out her trident guarding her wounded arm. She stared through teary eyes at a Izuku panicked who was saying something she couldn't hear. [Name] opened her mouth to talk but nothing came out she was mute. Desperately she signed to him "I'm sorry I don't know what's happening, I need to leave.", he could bearly understand. Backing away she ran, chaos warped around her as the city streets welcomed her.