I couldn't figure out why Suletta's mum had a red face. As far as we know, Quiet Zero didn't turn into a Gundam or emit particles within the facility. No one else seemed visibly affected.

Felsi calling them out was refreshing. She looked like she was shooting sealants to stop any cabin decompression, as opposed to shooting flame retardant, but Guel's suit was intact so he would have survived anything but an explosion anyway.