What is the Jenna thing in the Pretty Little Liars series?

Answer 1

I do believe its the fact that they blinded her because Aliaccidentally set off the fireworks when she saw Toby touching Jenna in a very bad way.

Answer

The five friends were trying on clothes at one of the girl's houses during a sleepover. Then Ali sees someone staring at them through the window. She thinks it is Jenna's brother, who lives down the street, trying to catch them naked. So, to get back at 'him', Ali suggests they take some fireworks, light it, and throw it in the garage where she saw 'him' run for cover when she saw him. So they throw the fireworks into the garage and it blows up and sets the garage on fire. It turns out it was JENNA looking at them through the window. She was wishing she could be friends with them. She didn't want them to think she was a stalker, so she hid in the garage....Unfortunately, the explosion caused Jenna to become blind.(The whole story is very sad to me. I personally think Ali seems like a bad person.) The whole town, including Jenna, thought it was a mere accident. Maybe it was, or maybe it wasn't.

Answer 2

Ali and the girls set up fireworks in a barn. Alli was holding the wire that could start the fireworks. Ali looked in the barn and saw Jenna and her stepbrother Toby. Toby was touching Jenna innapproipriatly. Ali was shocked and accidently dropped the wire,igniting the fireworks. Toby managed to save Jenna but she was left blinded.