Chewing Pig chewing on bars ?making Plexi cage ? Help

Hi guys my guinea pig, santas little helper, is a major bar chewer. She chews whenever I sit in my room and wakes me up in the morning at 5 or 6 every morning. I can't even sit in my room anymore. My cage is a 2x7 for 2 piggies so I don't think it's too small. I had 3 pieces of plexiglass at home so I put those where she chews the most but she still chews every other place .I was thinking of making a custom cage out of melamine and plexiglass the plexiglass around the front would be 10 inches high would that be enough circulation? My cage is an L shape and I can't stand the sound of bar chewing also is there anything else I can do besides plexiglass? I've even tried zip tying a chew toy to every front grid and it didn't work! Please help! Thanks

this is before I put the plexiglass in the front