Film-like substance on leaves

No, it's not trichome liquid... trichomes don't ooze liquid - they're just sticky. If you want to keep her going at all costs, I'd get some Spinosad or Dr. Zymes and give her a good spray... but you can't use neem oil at this stage unless you like smoking it... both Spinosad and Dr. Zymes are organic and so can be used on flower... failing that, mix a 1% solution of hydrogen peroxide and water and use that to spray. The hydrogen peroxide will kill whatever is making this and evaporates off. I'd suggest giving it a good spray and then giving it the chop after a few days. Good luck!