is making headlines this week for missing her 16-year-old son’s funeral (more on that later), but the  star is defending herself— and speaking out about her son Weston’s death, something she claims could have been prevented.

As  previously reported, Whitney’s son Weston Jr.— whom she gave birth to during her “16 and Pregnant” episode in 2009— died on June 2 from causes that are still unknown. Whitney and her ex have both stated that Weston Jr. suffered from several serious health issues, including Type 1 diabetes, but as of press time, the 16-year-old’s cause of death hasn’t been released publicly.

After news broke Tuesday that Whitney missed her son’s funeral after showing up late, she spoke out in several Facebook posts, including one written on Wednesday in which she questioned how her ex handled Weston Jr.’s medical issues.

(As The Ashley told you, Weston Sr. and his wife  raised Weston Jr., as well as Whitney and Weston’s other son River, and Whitney did not have custody of either of the boys. Whitney claimed earlier this month that this was because Weston Sr. could give the kids a better life than she could, but in another post on Wednesday, she changed the story a bit…more on that later.) 

In one of the Facebook posts on Wednesday, Whitney implied that her son’s health issues were not monitored properly. She also questioned how Weston Sr. handled financial issues surrounding their son.

“Tell me if this makes sense. My son had diabetes, Addison’s disease, and alpha one anti-trypsin deficiency, and he had no medical insurance, but he had a life insurance policy taken out on him,” Whitney wrote. “His dad bought five cars in the last six months but couldn’t pay for medical insurance. He brags about how much money he has and has the nerve to make a GoFundMe to help bury [Weston Jr.] when he was just going to cremate him anyway because it was the cheapest, plus he had the life insurance policy.

“His death could’ve been prevented,” she wrote about her teen son. “He should have had a Dexcom/glucose monitor that alerted when his sugar was going up or down to a dangerous level. In our custody order, [Weston Sr.] was supposed to have medical insurance on our kids; that was part of our agreement. That just doesn’t sit right with me, and I brought this up to him a few days before the funeral, and he got mad, thinking I was accusing him of neglect, but I just wanted to understand.”

In the comment section of her post, Whitney answered stated that she was unaware that her son was uninsured. 

“I had no idea he had no insurance until he already passed,” she wrote. “With [him] being diabetic I assumed of course he has insurance and his dad is court-mandated to have insurance in our custody agreement.”

Whitney— who was arrested last year for owing Weston Sr. over $20,000 in child support— claimed that her ex cut her off from her sons.

“I had visitation he just wouldn’t let me see them,” she wrote. “When I say I wasn’t allowed pictures I mean by [Weston Sr. and Amy]. If I ever uploaded pics of [the kids] they would get pissed off. The wife would watermark her name on pictures of my son. A judge already told him once he can’t keep me from my kids but did anyways.”

Earlier this month, Whitney explained that she allowed Weston Sr. to raise the boys because it was better for them.

“I gave custody to their father when I was much younger and in a very bad place in life mentally, financially,” she wrote in the comment. “A good mother does what’s best for her children and their father could give them a better quality of life. I don’t have family to support me and didn’t come from money. I was going thru a very traumatic experience at that time that I didn’t know to respond to correctly being so young.

“I would have loved for things to have been different but I did what I had to do to make sure they didn’t have to struggle w/me during that time,” she added.

At that time, she was much more complimentary to Weston Sr. and his wife than she was on Wednesday after the funeral.

“I graduated college since then and tried my best to grow into a better adult,” she wrote in a Facebook comment made in early June. “My kids had a wonderful father, stepmom and stepsiblings and it felt wrong to try to take them away from that once I was in a better place. I don’t care if you don’t understand or think I’m a horrible mother but I loved my children more than anything and they deserved the best even if that best wasn’t me at the time.”

Whitney was one of only two girls from the original season of “16 and Pregnant” who wasn’t chosen to appear in the spinoff . (Her co-stars , ,  and  were picked, while Whitney and Ebony Jackson were not.)

RELATED STORY: “16 and Pregnant” Star Whitney Purvis Explains Why Her Late Son Weston Was Raised by His Dad; Defends Giving Interviews After His Death

(Photos: Facebook; Instagram; MTV)