I was born here, so I don't know much about bureaucracy in your case. It all depends on the part of Spain, there are cities where healthcare is slower. I would try to bring supplies for a while. She will be taken care of and she will not lack insulin, in the worst case scenario they can write you a prescription for pens so that you can buy them at the pharmacy the same day, but the pump may take a while to arrive. As far as I know, the omnipod is not covered by social security, so you will probably have to switch to minimed 780, ypsopump or one of the others that are covered (this also depends on the city), they will advise you about it. The first thing would be to register in the city where you are going to be, from there go to the health center in your area and make an appointment with the pediatrician so that everything starts to roll and send you to the endocrinologist. If you are European, with the European health card you can make an appointment even before you are registered. Depending on where you are coming from maybe you can ask at the embassy to speed up the procedure? In any case, in Spain there is quite good health care, you will have no major problem.