Kaze
Banned
Elizabeth is the daughter of the couple who quite literally turned England upside down and moved heaven and earth to be together. I think she'd be quite happy to annul her marriage whether the Spanish liked it or not. Besides I suspect any foreign marriage for Elizabeth would end up causing another Wyatt's rebellion sort of thing. The English aren't going to want her being sent abroad.
Sending her abroad could be a recipe for disaster. All she have to do is leave her prospective fiance at the altar and go to a pro-protestant country and she would have an army for usurpation. Keeping her under house arrest keeps her from an army.