if the proposed draft amendment of Immigration Act is passed, someone who was a spouse of a citizen and legally resided in the country can get a residency if having custody, or visitation.
i didn’t find english version. someone may know where it is. meanwhile, this might be better than nothing. https://ws.moi.gov.tw/Download.ashx?u=LzAwMS9VcGxvYWQvNDAwL3JlbGZpbGUvOTA4Mi8yNzU2MjMvODYwNjI1ZjQtZTlmZi00MjVmLTllMDEtYzdmMjJjZjhhOGZlLnBkZg%3D%3D&n=5YWl5Ye65ZyL5Y%2BK56e75rCR5rOV6YOo5YiG5qKd5paH5L%2Bu5q2j6I2J5qGILnBkZg%3D%3D