Prader Willi Syndrome is a condition where translocation within acrocentric chromosomes takes place. However, more likely males suffers from it. As you said you are suspecting it for your daughter the similar type of thing can be seen in Angelmans Syndrome and this is usually suspected for female patients... As you have not stated any of the sign and symptoms about your daughter nor you have stated any particular history for your thinking. I suggest you that you can continue for your query through this site... There is no hurry as the test can be get done by staying at your own place wherever you are.. and the consultation is possible nowadays through teleconferencing there is no need to travel and waste your own money. Keep patience and then go for it... Many thanks...!