Audrey Roloff Ditches Grandfather's Birthday After Quitting 'Little People'

While the entire Roloff family gathered at the farm over the weekend to celebrate their patriarch's 80th birthday,

Audrey and baby Ember were noticeably absent just weeks after quitting Little People, Big World, RadarOnline.com has learned.

All of the Roloff children and their significant others were in attendance: Zach and wife Tori with 1-year-old son Jackson, Jacob and fiancee Isabel, Molly and husband Joel. Audrey's husband Jeremy attended the bash solo.

"Celebrating my dad (papa Roloff’s) 80th Birthday," Matt posted on Instagram on Saturday. "My dad, a huge positive role model in my life... so glad he’s still going strong so I can continue learn more life lessons from him... and Jackson can learn some too!"

In a second photo, Matt posted a picture of his entire family reunited and called out Audrey's absence.

"Audrey and Ember are there in spirit," Matt explained.

Separated from her family, Audrey and her 11-month-old daughter danced the night away at a friend's wedding reception.

Jeremy revealed in an Instagram story that he was missing his "girls."

Last month, Jeremy and Audrey shocked fans by revealing they were leaving the family's longtime show Little People, Big World.

RadarOnline.com revealed the real reason they were no longer appearing on the show was so Audrey could focus on her blogging and writing her first book with husband Jeremy.