Help getting my 15 year old daughter back into a routine!

My daughter is a school refuser and is currently spending most days at home isolated and alone. This is really affecting her mental health. 

Both myself and my husband work full time and her younger sister attends school.

I really need her to access something that will help her to gain confidence and realise her diagnosis doesn't mean she cant carry on a normal life. 

Secondary school has been a very traumatic experience for her and i'm afraid this has broken her.