Ah, don't!
We had pretty much the same.
It cost us ££, as initially we didn't want to claim on the insurance.
I've kind of put it out of my mind, now as it was all a bit traumatic!
The carpet in the adjoining bedroom felt damp alongside the skirting board.
But we got a repairer in who replaced the tray and shower cubicle, and regrouted the tiles.
A few weeks later, I smelled damp in the adjoining room, so we shifted furniture and found the skirting board blown and the carpet black.
What followed including holes being made in that bedroom wall to look at the back of the tap unit; the skirting boards being taken off. Another regrout. A not very good plastering repair. Some of this was done on insurance.
We were going to replace the carpets throughout, anyway.
Few weeks later, new skirting board blown, new carpet ruined. Again.
We got ripped off by another local handyman, who was convinced it was the shower drain-pipe leaking; his investigation work included quite a few holes but we finally ascertained that the leak was coming from where the bottom of the tiles met the shower tray. As the skirting and lower 8" of plasterboard had been ripped out! There was insufficient overlap and the tray was flimsy and was bowing when someone stood on it in the shower, breaking the seal.
So, we did what we should have done on day one; we got a local, expensive, plumbing etc company in who managed to persuade the insurers that the only solution was to rip the lot out and start again.
New tray, new cubicle and aquaboard on the walls, not tiles. Repaired skirting board, complete replaster of that wall. Unfortunately the quote didn't stretch to another new carpet. Our excess was £300 and of course the loss of our NCB.
So the shower is fixed, but I still have to sand down and repaint the skirting board and do as good a repair/ replace of the 12" x 3" stain on the carpet as I can.
You have my sympathies.