わからない箇所を教えてください。
I actually make myself shake my head and smile ruefully, as if someone might be watching me and checking my reaction – is he her lover or her friend? – and I have to be seen to do the right thing.
But it is difficult to get her out of my head.（前回の終わりの部分です）
She has changed a lot in the five years since I last saw her. I see it the moment I catch sight of her in the airport in Pisa – a difference about her I would never have guessed at. It’s the same when we embrace: something that has altered, something I can feel for the short time I’m holding her, before she pulls away and grins and we start to talk. I keep looking. I can’t help it. Even on the train I keep stealing glances at her, hoping she won’t realize. And I keep trying to find what the things are that have changed; and I keep failing. She has her hair shorter now, to the nape of her neck rather than to her shoulders. But I’ve seen that before: it’s the hairstyle she had when I first knew her. And she is five years older. But the physical changes are, when I isolate them, so slight, and I still see that she has changed a lot, and I don’t understand.
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主人公のAlexはartistで、展示会に備えるために、幼い頃過ごしたイタリアに戻ってきています。She(Anna)はAlexの幼なじみです。
I see it the moment I catch sight of her in the airport in Pisaのitは彼女が変わってしまったことですか？
a difference about her I would never have guessed at.彼女が変わってしまうなんて思いもしなかった、みたいな意味でしょうか？
It’s the same when we embrace: something that has altered, something I can feel for the short time I’m holding her, before she pulls away and grins and we start to talk.が全体的によくわからないのですが、
It’s the same when we embrace私たちが抱合う時は同じです？(意味がよくわかりません）
:のマークがついていてsomething～と繰り返されているのが読み取れません。
before she pulls away and grins and we start to talk.彼女が身を引き離し、歯を見せて笑い、そして私たちが話し始める前に、ですか？（このbefore以下の内容がなぜsomething that has altered, something I can feel for the short time I’m holding her,の後に必要なのかがよくわかりません。）
But the physical changes are, when I isolate them, so slight, and I still see that she has changed a lot, and I don't understand.のwhen I isolate themのthemはthe physical changes のことだと思うのですが、それらを分離する（isolate）、とはどういうことなのでしょうか？
たくさんになってしまいましたが教えてください。お願いします。
お礼
あきれた質問に対し 真面目にご回答いただきありがとうございます トラブルにならない程度に頑張ってみようと思っています 参考にさせていただきます 本当にありがとうございました