Yorkie, can you go to GP, let them know not for grommits, and specifically ask for advice re analgesia. Make it clear it is mostly at night that its a big problem. If GP is unable to come up with anything on the spot ask them to contact the childrens hospital acute pain team for specific advice. Do you have a GP in the practice with a particular interest in paediatrics? They may be more on the ball than some others.
It is not ideal to prescribe stronger analgesia for children on a regular basis, as it may be some time before ears resolve, but it may be that for the worst nights a sedative, or sedative analgesic is warranted. The issue with stepping up the analgesic ladder is you are getting into opiates, and then you have opiate side effects, constipation, daytime drowsiness etc. which may require medication to treat too, e.g. a laxative.
Re paracetamol and brufen, the bottle doses are cautious, with good reason. You need to get your DD weighed and discuss with GP specific maximum doses allowable, and dosing intervals. If you only medicate at night, you can probably give a slightly more tailored regime.
It must be very difficult for you to hear successful stories of grommits, but the studies of populations, not individuals do seem to come down on the side of not doing this operation. Not comforting for you at the moment I know.
Best of luck.