I am a British citizen and I met a Guatemalean girl. We got married in Great Britain and we had two kids who were born in London and are British as well. Before, she became an overstayed person as her tourist visa expired.
Two years ago, we left UK and now we are living in Ecuador, my first country. So, now we want to go back to UK and get the less complicated permission to enter UK.
What would be the best way to get that permission or visa?