In smoother English it could be rendered as:
The group couldn't help but laugh at the absurdity of it all. Amel, still rubbing her sore face, grinned sheepishly and said, "I guess I need to work on my prank skills... or lack thereof!"
"Hah, pegel banget sih. Coba ah, baru kali ini," gumam Amel sambil menekan tombol pesan.