Cora just said Abby! She's sitting on my lap looking at pictures from earlier today, so I pointed at Abby and said her name. Cora immediately repeated it! It comes out as Adda/Addy/Abba and occasionally, Abby, but it's clear what she's saying.
**I just found this in my drafts. Oops! I never posted it a month ago. Better late than never!