Is the wife obligated to make up two days she missed from last Ramadan if she suspects she ate suhoor after the Fajr adhan, and what are the consequences for her if it becomes clear that she did so?

Abstinence from things that break the fast begins with the verifiable emergence of the true dawn (al-fajr al-sadiq), or by relying on a trustworthy muezzin who is knowledgeable about the prayer times. If the wife did not verify that she had eaten suhoor after the true dawn appeared or after hearing a reliable adhan, then her fast is valid, and making up the day is sufficient for her. However, if she was certain that she ate suhoor after the true dawn appeared or after hearing a reliable adhan, then her fast is invalid, and she must make up two days instead of the two days during which her fast was broken.