Swollen lymph glands on neck

My two year old daughter has a swollen lymph gland just below her jaw, on the right hand side of her face. I first discoverd the lump on the 7th August but have later looked back at earlier pictures and can see that she's had a swelling for at least a month or so before. When I discovered the lump I took her to the A & E as I thought it had suddenly appeared. They checked it out and said that the gland was probably swollen due to an infection and that it should go down in a week or so. We went away for 10 days and the swelling increased so took her back to the hospital. The doctor was very concerned and sent her for ultrasound. This was not conclusive so she was then given an x-ray of her chest. Nothing abnormal could be seen so they then took lots of blood tests, checking for mumps, epstein bahr virus, glandular fever and Cat Scratch Disease. They then decided to do a biopsy and removed a smaller gland near the large one. The lump is not cancerous (thankfully!!!)but the doctors are at a loss as to what is causing it. They have now checked her for TB and and the prick is showing borderline positive. I refuse to believe that she has TB and am very reluctant for her to go through treatment for TB without being 100 % sure that she's got TB. She has not had a BCG vaccination (nor any other vaccination) but I took her to see a homeopath when she was about 3 months as she was sleeping poorly. The homepath prescribed Tuberculinum and I wondered if this can be the reason for the test being positive (just like someone who's had BCG would show positive)? Does anyone know? As I understand the remedy is made from the tuberculinum bacteria, just like the BCG vaccine...

My daughter is very healthy and has hardly been sick, apart from one ear infection for which she was given Amoxillin. She is presently very well, eats well and is full of energy. The lump seems tender but does not seem to bother her much.

I am not sure if it's relevant but my daughter was born normally, she was 10 days late and weighed in at 10 pounds. She was fully breastfed until she was 6 months and I stopped breastfeeding completely when she was 16 months. She still wakes up at night and used to wake up frequently when she was little and for this I have taken her to two different homeopaths. The first one gave her Tuberculinum and the second one gave her Pulsatilla. Otherwise I have used Belladonna when she has had a temperature and Arnica when she's bumped herself.

I would be grateful if anyone had any advice and also if anyone could confirm that it is possible to show a positive response to TB after having taken homeopathic Tuberculinum.