Damp and a vulnerable child

[ByCalmBlueWriter]

It’s a long story but I’ll try to make it short.
We have had a leak for 4 months. 8 reports, stage 1 complaint and escalation to MP, I am told the damp behind my tiles is a small wet mark on the wall.
My toilet ceiling is peeling off, the biggest leak in the toilet is 80cm short of our electrics and I am told that I have a small wet mark despite my tiles nearly falling off the wall.
It’s not a small wet mark, is it? As recollections may vary so do definitions of small wet mark but I might as well be unreasonable as I have been in this for so long.
PS: DC is super vulnerable often requiring A&E interventions and hospitalisations on oxygen.

It doesn’t look serious because I have run the dehumidifier and heating like mad and sprayed mould nearly daily. I have also regrouted recently as I didn’t want to inflict the same damage on the people downstairs and to prevent more mould in compromised / porous grout.

My child’s condition is unpredictable with winters being super tough for us without leaks and we are always cautioned about damp by specialists when he is hospitalised so avoiding it is crucial for managing the condition.