Kailyn Lowry's husband, Javi Marroquin, was deployed last month, and ever since, the Teen Mom 2 star has been staying busy.

'Teen Mom 2' Kailyn Lowry Opens Up About Javi's Deployment

As she navigates through life temporarily as a single mother, the reality star is doing her best not to let her husband's absence get the best of her.

"Kailyn is in school, always busy with the kids and her friend is visiting," a source told OK! Magazine, via Radar Online on Wednesday.

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"Kailyn and Javi stay in touch mostly through FaceTime," the source explained. "Kailyn misses him, but she's not going crazy about it. She's so occupied with the kids and her friend visiting. Once her friend leaves, it'll get slower and harder."

Meanwhile, Lowry's children, sons Isaac and Lincoln, have been having a tougher time getting adjusted to Marroquin not being around. 

"Isaac and Lincoln are missing Javi really bad," the source said. "Isaac is struggling with it worse than Lincoln. Isaac really doesn't get it [that his dad is gone]. He talks to him on FaceTime and asks to call him, but that's it."

As Lowry focuses on her kids and her school, she's also filming with MTV for the new season of Teen Mom 2 with her co-stars, including Chelsea Houska, Leah Messer and Jenelle Evans. A premiere date for the upcoming show has not yet been set by the network.