I can remember less facts about Abby at 3 months than at 2. She seems a lot the same now as she was then. But here's my best effort...
Abby went from sleeping like this on the couch to her bed this month for naps. She is a wonderful napper now. I thought I would have a cat napper forever, but she does great now.
Abby started laughing this past month. She laughs most for dad and Megan. Megan cracks her up at random times. She loves watching Megan play.
Megan and her cousin Nathaniel took swimming lessons together this past month and so Abby and Jenna got to spend some quality time together watching. Jenna is obsessed with Abby...or is it Abby's binky.
Megan still loves her sister and they do a lot of "reading" together.
Abby rolled over from tummy to back a few times this past month, but I don't know if I would say she has learned to roll over. If she has learned, she's different from her sister. Once Megan knew how to roll she had to do it all the time, but Abby does it occasionally.