She was just 30.

“@cadygroves has left this world,” her brother, Cody, tweeted on Sunday, breaking the news to fans of the “This Little Girl” star.

“Details are limited right now but family is trying to get them and will keep people updated. Rest In Peace little sis,” he wrote.

Her death came just weeks after she posted a series of despairing messages about the toll from staying home alone in Nashville.

“Some days my mental health is AWFUL,” she admitted on April 15, saying, “I feel completely alone and scared and far from everyone I love.”

She complained in other posts of “feeling defeated” from what seemed to be the “beginning of the world ending,” admitting “I’m going bats–t crazy.”

However, her brother later fought back against “a cluster of twisted misinformation” online sparked by her posts and his vague initial announcement.

“The medical examiner has completed autopsy and there was no indication of foul play or self harm,” he insisted.

“Simply put, Cady Groves died of natural causes.”

He explained, “She had some medical problems last fall and our best guess at this point until further testing is complete is that they had resurfaced.”

He gave no further details on the medical problems.

Despite his sister’s alarming posts, he insisted she was “really looking forward to the next few months and release of her new album.”

“Our latest in depth conversation (since most were witty banter) was her sending me songs to critique and give feedback on,” he wrote.

He also said he hoped she was reunited with her brothers Casey and Kelly, who died in 2007 and 2014 respectively — both from drug overdoses, The Oklahoman reports.