What is needed in order to apply for a "follow your husband" visa? [closed]

I'm from the UK, but I live in Thailand.

I grew up in Spain and was a resident there, but for the last 9 years I've lived in Thailand. I would like to take my Thai wife and our daughter to Spain to see all my family that live there.

We have made one attempt for a family visit visa, using my grandfather as the sponsor. At that time, my wife and I were not married; we had only our daughter to prove our relationship. We got married while that first visa application was in process.

Four days later the application was denied. We appealed it and added in the marriage registration (written in Thai). We also included a doctor's letter from Spain, explaining that my grandmother has recently had several strokes and was partially paralyzed, in order to show urgency. I don't believe we will win the appeal.

Now that we are married, if the appeal is denied, should I apply for the follow your husband visa? If I do, what is needed for that type?

I hope someone can give us some advice, as we are really running out of time. As I said, my grandmother's health is very bad. She is 91 and my grandfather is 97. They really want to meet my wife and see their new great-granddaughter.