Daughter struggling with leaving school and the future help please

My daughter is struggling with the thought of leaving school.

she has just broke up for half term and won’t entertain the conversation of college or what is going to happen when she leaves.

i have  applied for colleges for her and arranged taster days but every time I try to talk to her about what she wants to do she shuts down and it’s devestating me as I’m so worried about the future.

i have been off work since January to care for her and don’t see a way back to work.

she was predicted 6 & 7 in. Her gcse but likely to leave with nothing

can anyone advise me or give me some hope please I’m really struggling

thank you