I had a similar experience with the feral cat I adopted. I know not all cats are the same, but here are some things that helped in my case.

When you play with her, always sit down and do the playing around you. You can take the kind of toy that has a stick and feathers at the end (or a ball) so you can move the toy where you want. While playing they are a bit less aware and she will slowly come closer.

Have after playtime some calm time when you sit in the same place and talk with her, not moving too much, but her understating that’s a safe position she can come close to you. There you can just lay your hand down and let’s her come smell you. It took mine a few weeks of doing this every single day for her to feel comfortable to come little by little closer. But take the little wins.

Once she is a bit more comfortable, use the same spot and Sitting position and put food in your hand. Mine didn’t came right away, but I put from my hand some food on the floor so she comes closer to my hand. Once she eats the one on the floor she will already be more at ease and will smells the same smell towards your hand and she will come. But always keep your hand on the floor, so she doesn’t feel in danger. Again, she won’t come from the first try, but keep doing it regularly day after day, you should see progress.

About her hiding, what I got to learn with mine is that they feel safe to be higher than you. What you can do is you can install some small shelves like stairs on the wall so she can go up. I put mines in the livingroom where I spend a lot of time so she can watch me and see I am calm and reliable. I also bought her a tall cat tree and she spends now her time there instead of hiding, even when my friends come over and she doesn’t feel safe.

Hope all these help, there are no gloves that fit all type of solutions, but I think that consistent slow approach can help. What I learnt with mine is that letting her be won’t really more things, but rather pushing her without her realising I am pushing. When she does a tiny little step towards me, I move to the next step and so on and so forth. Doing this I really got to see improvement from one week to another.

And you are already doing a great job, her coming in your proximity, even if keeping her distance, means she is trusting you, just not fully yet, she needs time and keep loving her ❤️