I have an update about it:

So lately, I asked Malou Bonicos (the creator of Angels of Jarm) in Jun.7 about the pilot and the lost episodes (ep.1-14) of Season 2 from Angels of Jarm and if she still has them now, and after waiting for 3 days, she reply me this (with this pic I'm showing here, which is nice :3):

"Hello (my real name),

Lovely to hear from you.

Thank you for your kind words about my drawings of the Angels of Jarm and their World, much appreciated. Am really happy you like them!

I will have a look for the Episodes and Pilot that you mentioned.

Have a good day.

All the best, Malou"

So I'll update you if she got the missing episodes and the pilot.