your little lovey has inner ear infection for sure, but she has manic symptoms rather than the classic tilt and circling. It wsan't that common in rats but seems to be more now. You need to treat aggressively with antibiotics (you have synulox and something else?). The active infection will be cured but the manic symptoms will likely remain and you will be the owner of what I call a Manic Tilty. They are lovely rats and adapt to their new situation well even if in head waving high speeds LOL. I have a video of an old lady i took in that was a manic. I treated her for inner ear infection as I wasn't sure she ever had been even though she developed these symptoms as a baby and arrived to me at 2 years of age. She was an amazing little girl my Abbie was.
Can I ask as well, do we need to give her medicine her entire life or just with the antibiotics would be fine? And how do we know if the infection is gone and she is doing okay if she keeps the head tilt? My last question is, will she need help drinking/feeding if she keeps the complaints, because at the moment we are giving her supplement dissolved powder foods (she is eating her sweet peas)