I don't think she wanted to leave England either; after all, she coudn't really get married abroad, and life in Cleves wasn't that rosy either. It seems England was her best bet, although she was kept under many restraints there, especially during the lifetime of her ex husband. She had material security at least, and within reason could do as she wished, and find consolation where she could take it, as long as she was quiet and demure, and kept herself in the background; but after all, this was what she had done before in Cleves, and she did have other advantages in England that she did't have where she came from. She may have resented this sometimes, no doubt most people would. But I think she always kept in mind that it could be worse. It seems as if she was a woman who could live quietly in the country, and not be bothered too much by the need to do anything more. She wasn't the type who thrived on plot and counterplot, or she may well not have been living quietly in the country. Beyond that, she no doubt had to spend some time getting used to her new country, and experiencing things she never could have in Cleves.