How to interpret 身にしみる in this sentence?


In this paragraph:

>
> ちなみに私の語学力は日英ほぼ同レベルだけど、会話だけは日本語のほうが得意。つまり日本語力の問題ではない。仲良い友達も日本人が多い。英語という逃げ込む場所があるから違いが
> **身にしみる** だけで、もし日本語しかわからなかったら自分は人見知りなんだと思うだろう。

My interpretation of 身にしみる is for something to really penetrate through to
your heart. Something you think about deeply or 'touches home' (jisho.org)

My translation of this paragraph is something like:

> Incidentally, my Japanese and English skills are about the same. Only at the
> conversation level is my Japanese better. Basically, it's not a language
> problem. I also have a lot of close Japanese friends!

Here's where I trip up. The last sentence has three components that I really
can't put together:

  1. Since I escape to English
  2. Just from really feeling that difference
  3. You'd probably think I was a shy person if I spoke just Japanese




Although there may be nicer expressions, the simplest translation of this
身に染みる would be "to realize" or "to become keenly aware". This だけで means "it's
just that ～" rather than "just from/by ～ing".

> 英語という逃げ込む場所があるから違いが身にしみるだけで、もし日本語しかわからなかったら自分は人見知りなんだと思うだろう。
>
> (It's just that) I am realizing this difference because I have a refuge area
> called 'English'; if I spoke only Japanese, I would probably think of myself
> as a shy person.

The difference she is referring to is that, in Japanese, it is
culturally/constitutionally harder to get along with people you first meet in
a business setting. She's saying she could notice this cultural difference
because she somehow could communicate smoothly in English. (I'm not sure how
true her opinion is...)




Although there may be nicer expressions, the simplest translation of this
身に染みる would be "to realize" or "to become keenly aware". This だけで means "it's
just that ～" rather than "just from/by ～ing".

> 英語という逃げ込む場所があるから違いが身にしみるだけで、もし日本語しかわからなかったら自分は人見知りなんだと思うだろう。
>
> (It's just that) I am realizing this difference because I have a refuge area
> called 'English'; if I spoke only Japanese, I would probably think of myself
> as a shy person.

The difference she is referring to is that, in Japanese, it is
culturally/constitutionally harder to get along with people you first meet in
a business setting. She's saying she could notice this cultural difference
because she somehow could communicate smoothly in English. (I'm not sure how
true her opinion is...)

