Sorry for the wall of text. I don't really know how to condense this down since it seems like more context is in general better.

I'm work shopping a story right now where one of my protagonists would lose her vision part way through the story and had a couple questions about specific aspects. For a little background on the world and character, the story is set in a futuristic but dystopian setting where high tech stuff is available but only to the rich or city government basically, there's also a small population of superpowered characters. The character is basically a revolutionary/hacker that has a habit of upgrading herself and basically becoming a cyborg.

She's big on control and power. The type of person that makes you snap to attention when she walks in the room because she's so confident you're pretty sure you've done something wrong by breathing at her. She's smart, doesn't mince words, and can't help but make sure she has the upper hand in any situation. The cybernetic implants are kind of part of that, in the sense that she's claiming complete mastery over her own body. And in story dynamics with the second main character, she's the cutting-edge normal human running with the supers, and her slow burn love interest/second main is an extremely powerful superhuman.

How she loses her vision is basically a byproduct of being taken hostage by the antagonists and tortured to draw out the super character and kill them both at once. They escape, but because she had implants in her eyes, they're irreparably damaged. She doesn't treat this as her life being over so much as, while feeling extremely vulnerable at the time, immediately going into overdrive on how to retool her life to make the situation work for her as soon as she's physically capable. Basically redesigning all her tech as accessible, crash course in braille and doing things by touch, scheming ways to use the situation to her advantage (Like setting off strobes to disorient foes, or putting out coded stuff that's nonsense at first glance but has a touch-based cypher), anything really. Beyond that, ways to safeguard herself from similar attacks in the future.

Now that I have the stage setting out of the way I have two main questions.
1. Is it a cop out to give her some limited sonar ability? She would never regain her vision, but something I'm considering is an extremely limited sonar system. Like, can only tell the shape of objects in a certain range that are not obscured by another object, and would become essentially useless in rain or heavy snow due to the particles in the air. Or possibly lacking any "vision" element, just her learning to interpret a soundscape even? I know it's a trope, but it's the kind of setting where not being able to tell that someone is pointing a gun at you would be a significant problem. But I don't want to relegate her to operating remotely from her hideout when she has been physically involved earlier in the story. Or to basically have the super character constantly watch her and scoop her out of danger, because that would feel like infantilizing a character that's supposed to be capable, you know?

The second thing is that her eyes would basically be destroyed and removed, so she would probably end up with prostheses. But just the kind of character she is, she would view it as a point of customization, and end up with a few pairs that are unusual. Like made to look like deep space or some LEDs in them or something else cool. Would that be considered offensive in any way? Like, I can find people online that have custom eyes, but I didn't know if it would come across as her thinking she's too good for normal prostheses or something.

Anyone that made it through all this and has any advice, thank you in advance. I appreciate any help you could give.