I think a programme like this, out walking in nature, would be good for Kaity in so many ways.   
Just to name a few, it would help her to:

Build physical fitness
Improve emotional health
Connect socially
Gain new skills
Improve all round confidence

I like to think a wonderful programme like this would be a springboard into getting Kaity back into all the activities she used to love so much, & socialising again.