Kailyn Lowry hasn't been in touch with her mom for years, and reliving Isaac's 2nd birthday on Teen Mom 2's Season 3 finale was a painful reminder of just how unsupportive Suzi's been.

"Feel the same way about my mom as I do in Unseen Moments," Kailyn tweeted on February 4. "#3years She's never been to any of Isaac's birthdays. #numb."

The good news? Kailyn is super close to her Teen Mom 2 family, including everyone's favorite Papa Bears, Randy Houska and Jeff Simms!

"That is really a shame, when this precious time passes when they are little it's gone forever. Couldn't imagine not seeing mine," Jef tweeted Kailyn, while Randy added "on the other hand, if the anchor is drowning you, cut the chain."

Kailyn more than appreciates her co-stars reaching out to her, and wrote back "Thanks Randy! I have my own little family now."

Awww! This gal is happily married to her new hubby, Javi Marroquin, and Isaac is getting cuter by the day. Sure, it's too bad that Suzi isn't around to see Kailyn's fam grow, but thank goodness she has such a great support system!