控えめさゆえに、わたしの優しさは人に伝わりにくいかもしれない。
見えないところでしっかり他人を支えてくれる、なくてはならない人だよ。

Modest
Because of your modesty, your kindness may be difficult to convey to others. You are an indispensable person who firmly supports others in places where they cannot see you.