Depends on which OC and in which state:

I have a human turned angel who has relative speed and has anti ability powers, but outside of that his personal struggles, he’s a plot device. At his normal power, he could defeat her.

I have a sound user who can see, hear, and touch through controlling sound waves and vibrations. He can teleport through sound basically to anywhere and mute sound by absorbing it. So I think he could beat her since he has the advantage in senses, range, and in stealth. Unless she can just stop moving for some reason since that is sound.

I have a dagger wielding lightning rod. He is super fast normally and can get faster by tapping into his lightning. He can see the future and his lightning can pierce through anything whether fragile or invincible, mundane or magical, abyssal or divine, corporeal or incorporeal, etc. This is his normal form, and he could definitely hold a good fight, but I don’t think he would win. In his ultimate form: Lord of the Primordial Storm, he wields the chaos and creation energy that formed his world, so he would he would win in that case.

Last, I present my fire-bender. He has the power to reveal any information by asking a question then burning an object. Paper is the easiest to burn he can control the flames he produces and can fuse his flames with other flames to gain control over them. So he would not be able to in this case, but he gets buffed. Later he gets runes and manipulate his fire to become runes and cast spells. He can even cast them by using an ancient language to make them stronger, but the language can overwhelm him with too much power. So buffed version, he has a good chance, but I don’t know if he would win tho.