When a target is marked a few things appear, there is of course the indication that she is using her semblance, but onto what it actually does.This can use some rewording. What do you mean by "a few things appear" and "indication that she is using her semblance"?
She can be out sniped by targets with sniper rifles but she can shoot at an arc or manipulate the trajectory by curling the stringThis sentence is pretty confusing. Particularly the whole thing about how she can curl the string or manipulate the trajectory. Are you saying that if she does this then she can compete against a sniper? If that's the case, then I find that EXTREMELY hard to believe. The effective range of a bow is, at max, 100 yards. A sniper rifle has an effective range of up to 1,000 yards. With all that said, can you explain what you mean with this sentence? the curling the strings portion is confusing for all of us so, either remove it or reword it.
The bow is capable of long range shots and also capable of performing many different actions; bunker busting to artillery or long range supportI get that you're trying to create an EXTREMELY powerful bow, but this is taking things just a bit too far. I'm somewhat lenient to allow the long range support, but to say that it can take down a bunker or shoot like an artillery is too much. You can have powerful shots, but not that powerful.
Lightning (3) + Gravity (2) - Creation of a large gravity well with a ball of electricity at its core. Will continuously shock and damage anything within the gravity well for its duration. (14 seconds)This is just too OP, both with the power and duration. Either lower the damage or drastically cut down the duration.
Electric dust gives power to her arms to utilize the full draw strength of her bow. Without them she can reach 7/10 of the full power. She can punch with around 250kg of forcePlease remove the numbers. They just make things more confusing and harder to know exactly what that means. Easier if you just say "She can punch really hard" or something along the lines of that.