Cat with chronic head congestion and other symptoms

Hello Dr. Anuj,
I'm not well versed in homeopathy but have benefited from it.
I have a sick cat. She's 11 years old and has had chronic head and sinus congestion for about two years. I have worked with a classic homeopathic vet but was unable to find a remedy that worked. This last year we moved-and a traditonally trained vet said Emily, my calico feline, had some inflammation in her right ear (I had been treating her on and off for an ear infection and she had been digging and in ear and shaking her head, but more slowly than now).

I unfortunately have, after months of failed online pet homeopathic remedies, now scratches behind her ears. She shakes head in a quick burst of movement. She flings what appears to be clear mucus from nose when shakes head and licks her nose alot. Her breathing is very congested. you can hear it. She at times back swallows the nasal mucus to breathe better. And more recently, occasionally sticks out her tongue a little. I think I've seen her mouth breath a few times within the last several months. I'm not always with her so hard to tract. Has had clear tears from both eyes on occasion. she has rubbed her forehead and had a slight fever on and off mostly in afternoon. Not every week.

I now give her a mix of hypericum, Silacea, Mag Phos, Belladonna all 30c... on top of her food-for ear and right side lower molar gum inflammation which is not as red.

Before she eats: Arsen Album,to help gastritis so she will not vomit and: Phos, Silicea to help with gum inflammation.
I just started 2 days ago giving her some Bach flower remedies to hopefully address any emotional issues. I truly hope you can help us. She's been through alot.
Her poops are good, firm, and she pees alot. I add water to her canned food (all food is canned).

She is somewhat aloof. little interest in playing. Not a lap cat-except for short time. Loves me to give her box rides. I'm holding her in a small box giving a guided tour of our house.
Sweet in nature. Has tolerated alot of syringes with remedies and ear remedies. Sleeps alot. Obsessive licking. Her coat is healthy. At times her leg will twitch (not sure if it's always the same one). She scoots on the rug. this started after anal glands expressed. Vet said anus looks fine, glands not full. I had her checked for worms sometime back. negative results.

She gave a quiet growl at me this week twice. once I was clipping her nail and once for giving her another remedy by mouth. She's never done that before.

All vets have found her to be a sweet,gentle, good natured cat. Easy for them to handle. No aggression showing. She shows interest and even aggression when neighborhood cats walk right next to our lower windows. I think she's just trying to protect her territory. She is an indoor cat.

She's not getting enough exercise or outdoor time --on a leash.

Can I give Arsen Album 30c long term. or alternate with another remedy for gastritis? According to a muscle test her pancreas is at 30%.

I would really appreciate your help Dr. Anuj,I saw where you helped with another cat.
or if someone could step in if Dr Anuj can't help for some reason.. I really need to find relief for Emily.

Thank You! Veeda