I think I can make you feel a little better. I had a wild betta pair that cost me $95. They arrived safe and well and the top of their tank was completely glad wrapped so there was no space to jump out of.
24 hours later my male is a crispy on the floor. Have absolutely NO idea how he managed to get through the glad wrap.
Also this pair in the wild is listed on the critically endangered list. Doh!
Jumping always makes me feel like the most terrible murderer in the world but unfortunately with these fish it is a natural behaviour.