Salvar la distancia requiere solo una pequeña sorpresa

Contexto: Los dos personajes son chicas de la secundaria.

"¿Qué pasa? Pareces un poco deprimida."
Clare ha salido su grupo de amigas y de repente se le acercó a A. A vaciló al principio, ella nunca ha hablado con Clare, pero le ha mirado un largo tiempo. Esta acción impulsiva fue típica de Clare, y tenía celos de Clare por ello, pero eventualmente se ablandó y empezó a hablar.
"No es algo que entiendas Clare."
"Inténtalo. Puedo soprenderte."
"Entiendes, eso es lo que quiero decir. No te importa lo que la gente piensa. Puedes hablar conmigo y no te pasará nada malo. No puedo hacerlo. A todo el mundo, soy solo 'fulana A o B', nada más."
Ella ha dicho más de lo que pretendía. No se acostumbraba a este tipa de conversación, estaba siempre a la distancia. Estaban de dos mundos separados, y no servía de nada cambiar eso.
"No es verdad. No eres 'fulana A o B', eres Ximena."
Ximena quedó un poco estupefacta.
Clare sonrió.
"Dije que te sorprenderé, ¿no?"

Preguntas: ¿Es el cambio de "A" a "Ximena" tiene sentido en español? ¿También es la forma de escribir diálogo donde quien está hablando no se revela explícitamente suena natural?

Bridging the Gap Requires Just a Little Surprise
Context: The two characters are high school girls.

"What's wrong? You look a little down."

Clare stepped away from her group of friends and suddenly approached A. A hesitated at first, she had never spoken to Clare before, though she had watched her from afar for a long time. This impulsive action was typical of Clare, and A had always resented her for it, but eventually, she relented and began to speak.
"It's not something you'd understand Clare."
"Try me. I might suprise you!"
"You see, that's exactly what I mean. You don't care what other people think. You can talk to me and nothing bad will happen to you. I can't do that. To everyone, I'm just 'random girl A or B', nothing more."
She had said more than she meant to. She wasn't used to this kind of conversation, she had always kept her distance. They lived in two separate worlds, and there was no point in trying to change that.
"That's not true. You're not 'random girl A or B', you're Ximena."
Ximena was a little shocked. Clare smiled.
"I said I'd surprise you, didn't I?"

Question: Does the change from "A" to "Ximena" make sense in Spanish? Also is the way of writing dialogue where you don't explicitly say who is talking natural?