This is proper gutting mate. If I were you, I'd draw a birds eye diagram with a description of what exactly happened, your speed, lots of photos of the damage, where you ended up, where she came out of and use it all to make a 'picture' of the real events and therefore why she must be to blame beyond all reasonable doubt. Do not take any responsibility, her actions affected you, not the other way around. I'd also make a point of her husband causing you distress but not seeing if you were okay, instead accusing you of the accident. I'm not sure whether you can or not but I'd also try and find out if the old couple stopped any witnesses as well.

Best of luck with it all!