My Secret Unicorn Stronger Than Magic And A Special Friend - Two Books In One

A bind-up of books 5 and 6 in the highly successful My Secret Unicorn series in which Lauren and her magical pony, Twilight, share some exciting adventures. Lauren is desperately worried when Twilight falls ill - perhaps he has been doing too much magic?
In 'A Special Friend', Lauren and Twilight discover that a little pony Moonshine is also a secret unicorn - but how can he find a 'special friend'?