I had road accident in scotland - what to do with my car and family?

Hi everyone
it is very good idea with this kind of forum. people still looking for free legal advice! hope that someone will help me as well.
So...
one year ago we had accident in Scotland, in the middle of the trip to Glasgow! I'm from Cornwall so You can imagine how far we go by car! We was so tired. My father drive the car, at night and he slept! We hit other car and go out the road. My mum had crashed leg bones:( She was in hospital about 3 months!) I broke my hand, my brother had whiplash injury, me and my sister serously head injury:( We get compensation with help of solicitors from Glasgow (the biges solicitors company). But they charge us a lot. Is it normal? We didn't get any invoice for this costs....I think it might be illegall....I heard about no win no fee but if they charge us for help to get a compensation...I thought it's normal???? please help me