I haven't been watching that long. Who is Delia?

Delia is Melindas best friend who works with her in her Antique Store.

Yeah she works in the store with Melinda.... she;s really uber protective.

Delia is Melinda's best friend and she works with Melinda in the Antique store because her former employee Andrea died

Delia is Melinda's best girlfriend ever since Andrea died. Delia has a son, Ned. The first time you meet Ned in the series he steals from Mel's antique shop. But he still very young, and haunted by his father's death. :-)