Welcome to our forum. First of all, breathe and relax. Don't beat yourself up for this. Research is everything when it comes to purchasing a queen if you are going to start breeding. First, you need a mentor and obviously this breeder and her mentor are simply not who you need.
When purchasing a queen, the registration paperwork should be provided to you immediately. Breeders register the litter, so the registration papers for the kittens when they are old enough to leave, are available.
Note, quality breeding queens go for over $3,000 here in the US. Your conversion comes to just over $2,100. Things may be different over there. Know there are so many GREAT breeders in the UK. I don't know if this breeder has a cattery name, but if you post it or PM me the name, I will do some research in my database to see if I have any of her cats in there.
Breeders should always have vet records on their queens and studs. They should have test results for HCM, PK, PRA, etc. They may not go into genetic testing. Color testing should tell you whether there is any charcoal in the cat. And they should be able to show you pedigrees on both the stud and queen of the kittens.
It appears to me that you simply chose the wrong breeder. What's done is done. Breeding cats is a full-time job and it's more than just mating a queen and stud and waiting for a delivery of kittens. And if all you're seeing is $$$, you may be hard pressed when the queen delivers ONE kitten. Breeders need birthing areas, then kitten areas. One must know emergency procedures and have a vet on call when the kittens are due. You may have to assist in delivering the kittens. Then if the mother refuses to nurse, you need to have special formula on hand to feed the kittens or even to supplement. If a queen has more than 6 or 7 kittens, they usually are not going to get enough milk from the mom.
I know I've gone off track here and I am NOT a breeder, but a lot of it is common sense. Finanne Bengals just lost not only five new kittens, but the queen died yesterday as well. Things can go wrong. Most of the time, things go right.
Your "breeder" is not going to refund all your money and you feel you have been sold a potentially defective queen. You can do one of two things. Breed her or return her to the breeder and be out the money and try a better breeder.
You have not mentioned a stud for your queen. Are you planning on purchasing one or getting stud service? The latter requires your queen be extensively tested for everything. And, does the stud come to you or you send your queen to the stud? Millwood Autumn Of Bengal Basket died from an infection she caught while being bred to a stud at LeopardFuzz.
With all of this negative information I'm posting, why would anybody want to breed animals? Because some just love the breed and want to develop the best quality, sweet temperamental cats. I'm sure this was your reason because the money is just not there. Hobby breeders have it easier, but the large breeders build climate controlled out houses with individual cat runs. They have special birthing rooms for the moms. Then kitten playrooms. Plus, I know breeders who provide just about everything with their new kittens. Litter, boxes, blankets, food, pet insurance. This costs tens of thousands of dollars and one of the reasons they can charge $2,800 for a PET quality bengal.
I don't know if this has helped you any. But, I'll be happy to spend time researching this breeder if you will provide me with her or her cattery name.