安心していられるさま
being both assured and feeling encouraged
安心していられる程度
the degree to which something is reassuring
ひとまず安心する
That is a relief.
身軽になる
(荷を下ろしてなら)to be eased of a load―(重荷を下ろしてなら)―be relieved of a burden―(産をしてなら)―be delivered of a child
穏やかになること
the action of moderating
身持になる
to have a close relationship with another person
to become quiet―become calm―(騒ぎなら)―The noise quiets down―The tumult subsides―(風なら)―It falls calm―The wind goes down―The storm subsides―(世の中なら)―Peace is restored
They are great friends with each other.