[Nash]

Hi Sweet Cherry!

Im kinda new at teaching but have experience when it comes to people. Sounds like the "confidence" of your student sounds more like the problem than a learning or coping disability.
You need to find out what the problem is that is causing her to fall behind ( yes you need to play psychologist).
The positive reinforcement will help in the confidence building but you need to discern when to implement it.
I also agree do not single her out, that will isolate and cause her to perform badly again.
Find out where she wants to work abroad and find a tourist video or books to motivate her to reach out, the books and video will also aid her in her learning.
Hope i was of help to you.

Bless you!