Satu, thank you for posting this last video. I believe you are right, the 10 days looks like it should be enough, she really looks good.
I am not overly worried about the meds getting into the ottos. IF they show symptoms at some point then I would suggest moving them to quarantine by themselves and treating the water. Ottos are not as easy to feed meds to, but I would advise against trying to medicate vegetables for them on a dish in the tank. Going that route you are likely only going to waste precious meds that won't get into them anyways. Once in the water the medication will break down too quickly to wait for them to come around to eat. My primary concern was for the other danios, fish of the same species, which is where this is going to be most highly communicable and where it could be passed back and forth between Lorna and the other danios.
If you should notice something changes with the ottos let me know and we will discuss it as a separate issue and work forward that way, but I am not expecting that.
You are right, I do truly care about the fish/animals. The fish are my life, this is what I do for a living. I started this career about 20+ yrs ago and can't imagine my life without it. Its not always the easiest or most pleasant job in the world, but it has its moments like this, where I get to see first hand the difference I can make where an innocent animal would otherwise have died... and that's all the reward I need to keep me going. I would imagine a people dr goes through the same kinds of ups and downs I do on a regular basis. Ask any dr how they do it and they will give you a similar answer... even though we can't save them all, its the ones we can save that in turn save us. Personally, I just can't imagine doing anything else with my life, nothing would compare.
I am glad to hear that your mother has a dr who is sympathetic to your situation and is willing to help you with the meds. It's really sad that so many vets simply refuse rather than investing themselves in saving lives when they are able. I guess that makes me glad I live where I do... resources such as this are much more available here. The down side is that too many people in the states abuse the medications we do have freely available for our fish. Too few ask for appropriate help by someone who's trained and educated to do so, and in turn many end up killing more fish than helping them in the end. Every coin has its flip side.
There are many times when I wish that fish meds were not so easy to obtain by the general public because the manufacturers don't offer the kind of instructions and help that people need before using this stuff. It is not yet common knowledge that all meds are not safe for all fish. There are specific meds that treat specific problems in specific species... and to not know this information means taking some huge risks by simply guessing. It has taken me many yrs of training, education, and experience to know the things I do, and that's not to mention the endless hours of studying and research that are continual to keep up with new forms of illness/disease, new medications on the market, etc. A lot of people don't understand what goes into a job such as mine, nor do they understand why I am so devoted to it. All I have to do is look at your video clips of your fish to know why... or to go gaze into one of my many tanks here at home. Its all about the animals who don't have a voice of their own that people understand or are willing to listen to in most cases, and about innocent lives that have just as much right to life as any other. When I see a fish I don't see an unintelligent creature that is disposable. I see beauty, intelligence, and feelings just like I do with my dog, my bird, and even people. To give up on that would mean giving up on all life, and I just don't know how to do that.
Keep me posted and let me know if there's anything else I can do to help you.