Why would a girl place her hand right next to your hand while she's showing you something?

Would this be a shy girl thing?

Does this mean trust or something else?

Why didn't she went clear with this? I didn't rejected any of her advancements

Context:

There's this girl that I've barely met. She sometimes looks at me like she wants to know where I am. She's usually on her phone but sometimes she suddenly stops and looks at me without saying anything for a few seconds, then she talks to me.

There's 2 occasions that she had some difficulties and she showed me her work phone just to know where a specific area is. While she was doing that and I noticed behind the phone (more in the background) I placed my hand on a table and she had placed her hand on the table as well so close that our fingers were almost touching. I accidentally moved my fingers and she kind of moved away a little bit but we were still very close to each other and I was more focused on the phone. I don't know if she wasn't that focused on the phone at all or it's just trying to distract me.

Why would a girl place her hand right next to your hand while she's showing you something?
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