But you succeeded. She has done so once, she can do so again.

[Have some more firm look then. Sabriel's actually had a conversation similar to this...when Adele's friend Alistair had left and she was worried for the man's safety in his home world.]

Worrying won't help her, or you so long as we're here. It will only make you miserable. Instead of thinking of all of the hardships that might face Usagi, think of her strength; her triumphs.

She will be alright.