TEEN Mom Nathan Griffith's mom Doris Davidson was devastated after his ex-fiancee Jenelle Evans took Kaiser from her home last month.
In an exclusive interview with The U.S. Sun, Nathan, 37, opened up about his mother's heartbreak after his ex made a sudden about-face in their son's new living situation.
The former reality star said his mother called and was inconsolable when Jenelle snatched Kaiser from his new home and school to drag the 10-year-old back to Las Vegas with her.
"The very instant it happened, the school called my mom, and she was crying her eyes out and she was like was just like, 'I'm so heartbroken.'
"I said 'Mom, I'm sorry, I wish I could do anything.' But you really can't. You want to do everything you can.
"But what can you do unless you have solid evidence or proof of this person doing something," he said of his son's situation with his reality star ex, whom he previously accused of neglect and called a "monster" for allegedly allowing their son to be abused by her estranged husband.
Nathan claimed his mother has been calling him "every couple of hours" since Jenelle snatched Kaiser from school in Tennessee.
"I try to tell my mom, 'Hey, just try to relax. I know it stinks right now.'
"I try to give her advice, and I said, 'Don't worry about it.' I was like, you can't control what she does. It does stink, suck, however you want to put it.
"But I was like, 'There's a reason for everything, let's just try our best with the cool, level head, not getting involved in media that much, and Kaiser's going to find his way.'"
"I just hope I can stay in contact with him...and me and him can have our father-son talk, because I really think it benefits him a lot when we talk," Nathan added.
Nathan previously shared with The U.S. Sun his concerns over Jenelle's three children being exposed to drugs in her home.
He also leveled abuse allegations against her estranged ex, David Eason, and accused her of leaving her two youngest children, Kaiser and Ensley, 8, alone with babysitters for three weeks.
The former Teen Mom 2 star first opened up to The U.S. Sun about his worries for his son's well-being after Jenelle moved the 10-year-old to live with his paternal grandmother in Tennessee in October, only to make an about-face in her decision and rip him out of his brand new school just three days into starting.
Nathan said he believed Jenelle was "making the right decision" when she brought their son Kaiser to Tennessee to live with Doris.
Nathan said Kaiser was in a "sticky situation" in Jenelle's care.
"My son has already [edited out for privacy], he already vapes, he's already [edited out for privacy], he's already done [edited out for privacy], and he's 10 years old," Nathan previously alleged.
He added that he wished Child Protective Services would take the allegations against Jenelle seriously while claiming their 10-year-old had gotten in trouble in a vaping incident at school.
Jenelle has denied to The U.S. Sun that she has drugs in her home and denied that Kaiser was caught in a vaping incident at school.
Nathan also accused Jenelle's ex David of abusing Kaiser.
He claimed Kaiser told him that his former stepdad beat the "living crap" out of him after he was erroneously blamed for hitting his sister in the head with a rock.
The 37-year-old said that any sibling incidents involving David and Jenelle's daughter Ensley, would incur the wrath of the reality star's 6' 4" ex.
Nathan recounted a story Kaiser told him about how his little sister was "messing with him and hitting him and pinching him," and so her middle brother went ahead and pinched her back.
The 37-year-old said that he was told Ensley did not get in trouble, but that David allegedly pinched Kaiser as "as hard as he could and made him bleed on the arm."
Nathan says the tween has a scar on his shoulder from the incident.
The former MTV star also shockingly alleged that the 10-year-old claimed that his stepdad had "punched him in the face several times."
David is currently facing felony assault by strangulation charges for an incident with Jace last fall.
While he is entitled to a presumption of innocence, Jenelle's soon-to-be-ex has never publicly addressed or denied any abuse allegations against him.
Jenelle and August did not deny all of the claims of abuse leveled against her estranged husband, but she did deny ever seeing any of it with her own eyes.
