Hermann tortoise worry

[Johnny Wizz]

We have serious concerns about our two and a half year old Hermann. She (we think female!) is simply not eating. She had a bad start in a viv with another more aggressive tortoise. We rehomed the other more aggressive one and put her in to a tortoise table. She has an Exo Terra lamp withe a dual purpose 80 watt bulb. This delivers a daytime temperature range across the table between 21 and 29. We have her on a Komodo brand tortoise substrate. We are bathing her regularly. We have tried her on various lettuces, she will occasionally take a bite of Lamb lettuce, dandelion and plantain, both of which she just ignores. She is slowly losing weight and we don't know how to stop this. Any help would be appreciated.