I have some questions about Sinon's trauma in SAO 2: Gun Gale Online.?

So Sinon has a gun trauma from an incident in her childhood. And she's using GGO as exposure therapy. She mentions that she is afraid of guns, pictures of guns, and videos of guns like on t.v. shows. So how come she seems fine in GGO? Is it different for some reason. I like to write, and I want to write a... show more So Sinon has a gun trauma from an incident in her childhood. And she's using GGO as exposure therapy. She mentions that she is afraid of guns, pictures of guns, and videos of guns like on t.v. shows. So how come she seems fine in GGO? Is it different for some reason. I like to write, and I want to write a character with trauma at some point. So I like to learn knew things. Is Sinon's trauma depicted accurately??? Or is she fine in GGO for plot convenience? I'd like to know.
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