The pair welcomed two children, a son named Thomas and a daughter named Charlotte, viaTV Season Spoilers.
At the time, the character was played by actor Casey Deidrick.
However, he found that Mia was already dating Will Horton (then Dylan Michael Patton), perSoaps.com.

At the time, Chad had no idea that Mia was carrying a huge secret, perSoaps in Depth.
When Mia went into labor, she called Nicole to come take the baby girl.
However, Nicole had other plans.

Sami was given Mia McCormick and Chad DiMera’s baby, a little girl that she named Grace.
Sami made plans to raise little Grace with her then-love interest Rafe Hernandez (Galen Gering).
The two fell head over heels in love with the little bundle of joy.

However, Grace began to experience health complications.
Sami and Sydney were reunited after much drama.
Mia later left Salem and Chad moved on with Abigail Deveraux.