I think she'd remain in Spain. That's not to say there wouldn't be visits to her father (they were close, after all)
No problem! Should've realised the wording of the op could lead to confusion and have been clearer. I can see the logic behind having Margaret stay in Spain, especially if Isabella passes away around otl and needs a regent for the young Queen.Oh, sorry! I think it would depend on whatever the political situation is at the time, but she’d probably stay in Spain.