Thank you for your question
My name is ***** ***** I shall do my best to help you.
In fact if you apply for a Declaration of Parentage and the other party refuses a DNA test then the Court can make an Order that you are NOT the father
Alternatively if you apply for a Child Arrangement Order and ask for a DNA test within that the Court can Order that you have contact with the child and if she wishes to avoid that then a DNA test is the only answer
Please ask if you need further details
You either apply for a Declaration of Parentage
Or you apply for a Child Arrangement Order and ask for contact with the child
With either case you will have to pay for a reputable firm to conduct the test - and you can ask for a picture of the child that is tested.
You will have selected the firm and you will pay the bill will will give you the certainty that you need.
In fact the home tests are not as accurate - but you can take your choice from one of the reputable laboratories and you can pay for independent testers to take the samples