VIDEO: Alex Rodriguez's girlfriend Jaclyn Cordeiro celebrates daughter Savannah’s 12th birthday with throwback snaps

For the past twelve months, Alex Rodriguez has been in a relationship with Jaclyn Cordeiro. Although the pair appear keen to forge a new path forward together, each keep close ties to their children from previous marriages.

On October 17, Cordeiro's daughter Savannah celebrated her twelfth birthday. To mark the occasion, Cordeiro took to her Instagram account to share a montage of her and her beloved Savannah. Among the photos were images of Savannah as a toddler, as well as images of various family holidays and activities that have taken place over the years.

A native of Windsor, Ontario, Canada, Cordeiro splits custody of her children with her ex-husband, and often sees her daughters every other weekend. Although they may not be around each other as often as some families, Jaclyn Cordeiro is always sure to make the most of time spent.

The founder of JACFIT, a fitness and wellbeing program, Cordeiro is self-admittedly "obsessed" with fitness and health. A personal trainer by trade, Cordeiro's social media often shows her workout routines, diet recommendations, and glances into her personal life with the retired New York Yankees star.

"Alex Rodriguez & Jaclyn Cordeiro at Inaugural REFORM Alliance Casino Night Event in Atlantic City, New Jersey - Taeyeon at Louis Vuitton fashion in Paris - Barbara Palvin at Mugler Womenswear in Paris - Zendaya at Louis Vuitton Womenswear as part of Paris Fashion Week." - SIBOMAMA Jean Bosco

Although her own children come first, Cordeiro has also embraced Alex Rodriguez' two daughters, Ella and Natasha. In the spring, Cordeiro even went alone to watch Natasha perform in a stage production of Oklahoma! at her college in Michigan.

Alex Rodriguez and Jaclyn Cordeiro navigate the next stage of parenting together

While their respective seperations add a degree of logistical challenges, both Rodriguez and Cordeiro always put their children first. As a source close to the couple told PEOPLE about A-Rod's approach to being a dad:

"Over the years, Alex has been a great father. The couple's interactions have gotten better over the years, and they ended up co-parenting in a very positive way for all, they have a good relationship now, having put their kids ahead of everything else"

Judging by the captures depicted in Cordeiro's post on Instagram, it looks like the Canadian fitness guru has put in years of work as a mother. Now, she is reaping the rewards in the form of priceless memories.