you and Isaac are school sweethearts, you loved to help his crazy ideas of machines. your power of manipulating with people into giving you what you want is also very helpfull, but the fact you also can manipulate everything else is a big bonus. even tho you said to Isaac you can use them to help, he won't let you because he knows that each time you use that power, you get hurt not mentally but physically, if you abuse your power you get heavy nose bleeds and mouth bleeds which can end up into bleeding out or getting you to the hospital. and He knows he can't fix this, unlike his sister's hyde who he can be able to delete your power is you.

He didn't tell you about the machine he planned for saving his sister, but one day you found the sketches on his table in his secret laboratory you use to meet up at nights, to either make out or build machines. When you saw the sketches, you felt like he didn't trust you, or he didn't want you to help... BUT YOU ARE USEFULL! you have to be. so you didn't wait a minute and started using your power to start building and getting the machine ready not caring how much of your power you're using, you ignored the nosebleeds and mouth bleeds

but then Isaac came in and saw the machine being done but you leaning against the table trying to stop the bleeding

Isaac: "what did you do?"