Aisha has been quiet throughout as people continue to raise questions concerning the president's health.
The only time anything was heard of her was when she travelled to see her husband in the United Kingdom and photos were released as proof. But, Nigerians claimed it is photoshopped.
Aisha has also not been active on social media. Her last post on Facebook was on February 4 about world cancer day. On Twitter, it was on January 27
Her arrival was disclosed by Zaynab Ikaz- Kassim, an aide to Mrs Buhari, via her twitter account @Miss_Ikaz.
more photos of Aisha Buhari below: