Lifestyle Pets Kelly Stafford and Husband Matthew Mourn Death of Family Dog Marley: 'My First Baby Girl' Kelly Stafford shared several heartfelt tributes on Instagram to her family's dog of 13 years, a loving canine named Marley By Vanessa Etienne Vanessa Etienne Twitter Vanessa Etienne is an Emerging Content Writer-Reporter for PEOPLE. People Editorial Guidelines Published on April 26, 2022 03:40 PM Share Tweet Pin Email Photo: Kelly Stafford/Instagram Kelly Stafford is mourning the death of her family's loving dog Marley, who "filled Matthew's side of the bed" when Kelly's husband, Matthew Stafford, first "left for the NFL." The Los Angeles Rams quarterback and his wife lost their 13-year-old pet over the weekend, Kelly announced on Instagram Monday alongside an emotional tribute to the canine. "Why is it such a surprise and so hard? Dogs aren't supposed to outlive us, we know it when we make them part of our family. So why does it feel like it's never coming?" Kelly wrote in her post, which included photos of her and Matthew cuddling with Marley in the dog's final moments. "I woke up this morning without a face in front of me that I've been used to waking up to for the past 13 years," she continued. "The room didn't feel as warm or cozy. I sat up and saw the empty dog bed at my side and the tears started rolling again." Never miss a story — sign up for PEOPLE's free daily newsletter to stay up-to-date on the best of what PEOPLE has to offer, from juicy celebrity news to compelling human interest stories. L: Caption . PHOTO: Kelly Stafford/Instagram C: Caption . PHOTO: Kelly Stafford/Instagram R: Caption . PHOTO: Kelly Stafford/Instagram Kelly added that Marley first joined the Stafford family over a decade ago when Matthew "left for the NFL," calling the pup "my first baby girl." "She immediately filled Matthew's side of the bed. She became my pillow, not just when sleeping, but also the pillow I used that collected all my tears.. her fur was soaked far too often by my tears, but she never seemed to mind," she continued. "I'm devastated and this house just doesn't feel as full as it once did," Kelly concluded the post. "Thank you, Marley, for loving me unconditionally no matter how many mistakes I made. Thank you for filling my life with love and joy for the past 13 years. I love you so much and miss you more than you could ever understand." Kelly Stafford on College Romance with Husband Matthew — and Why She Purposely Dated His Teammate Kelly Stafford/Instagram The Morning After with Kelly Stafford podcast host shared more photos of Marley on Instagram, including snaps of the pet as a puppy and shots of the dog with Kelly and Matthew's four daughters: twins Sawyer and Chandler, 5, Hunter, 3, and Tyler, 21 months. "Before your sisters came, you were what made us a family. You were always there for me." Kelly wrote in an additional Instagram tribute to Marley. "And once your sisters came, the only thing that changed is the amount of love you received and the amount of love you gave away. You were the best dog. We love you, Marley. Rest In Peace baby girl." Want to get the biggest stories from PEOPLE every weekday? Subscribe to our new podcast, PEOPLE Every Day, to get the essential celebrity, entertainment and human interest news stories Monday through Friday. Additionally, Kelly posted a video montage of her family's time with Marley over the years, paired with Britt Nicole's "The Sun Is Rising." "💔 I can't stop crying. This song is what I feel like what Marley has said every time I was hurting and crying on her… I feel like she's looking over me saying the same," Kelly captioned the clip. "Miss you sweet girl." "I just can't believe I'll never look into her eyes again. I feel so broken right now," she added on her Instagram Story. "I know all I need is time, but as I lay in her dog bed, time feels like it's standing still. When does it start to continue?" In the comments of her social media tributes, several other stars shared their condolences to the Stafford family, including Jana Kramer, Taylor Lautner, and Olivia Munn.