The performance came one night after Arlen and Chmerkovskiy performed a tango set to Taylor Swift's "Look What You Made Me Do," which earned Arlen the top spot on the leaderboard and a special thank you from Swift herself.
On Tuesday, after Arlen and her handsome partner delivered a rumba set to "Easy" by Sky Ferreira, the couple joined co-host Erin Andrews backstage, where she presented the birthday girl with a bouquet of flowers and a message from the Reputation artist.
"Victoria, you are incredible and I was so honored you danced to my song. I’m so inspired by you. Love, Taylor,” Arlen read aloud as she got visibly emotional.
For Arlen, her journey to joining DWTS has been nothing short of miraculous. When she was 11, she developed two debilitating afflictions that led to her being fully paralyzed and eventually falling into a vegetative state for four years.
When she turned 15, she began to emerge from her vegetative state, and even started to regain some of her motor functions. As her recovery progressed, she began to relearn how to walk -- a skill she didn't even begin to develop until a year and a half ago, after spending a decade in a wheelchair. Even now, she still doesn't have any sensation in her legs.
For Tuesday's rumba, and her tango on Monday, Arlen has started to become more comfortable with performing and showing her vulnerability, but she admitted that each time she hits the dance floor it's still "incredibly nerve-wracking."
"I can't feel my legs and I still don't know what they're capable of, and I'm very grateful that Val has continued to show me what they're capable of," she shared. "Val's ultimately kind of the driver on this train because he's like, guiding my feet."
"I've spent the last year and a half looking down at my feet and for the first time, I'm looking up at Val and we're dancing and so it's pretty crazy. All of it is really amazing," Arlen added. "I'm really lucky to be paired with this one. He's pretty great."