u/jbates434

I had a tadelakt shower put in a couple of years ago. About a year ago I noticed a small amount of mold which then became larger. It's only here and a little bit in one of the corners. I haven't used it for weeks. I noticed that the grout on the tile is chipping, and water is probably getting behind the wall. My question is: what do I do? Will I be ok if I can get rid of the mold and re-grout the tile? Do I need to get the whole thing re-done?!