Victoria's baby Molly has taken a turn for the worse, and is now in a medically-induced coma and not responding to medication, the family says.

"We thought we had been through the worst but now we know, things can always be worse," tweeted Molly's dad, Dave Campbell from her hospital bedside.

"Molly now on minimal stimulation, means we can't talk to her or even hold her tiny little hand. I hope she can feel me right by her side!," he added, as doctors induced a medical coma in an effort to stop her seizures and get her blood pressure under control.

Molly was just 28 days old when she was diagnosed with a rare form of leukemia. Her cancer went into remission, but she relapsed just before her second birthday.

"She was three weeks old. And that's crazy for a child, a family even, to have to go through that, when they should be embracing their newborn baby but instead she's fighting for her life," said Tara Wilcocks, a family friend.

"And now they have to do it all over and she's old enough to understand that something's wrong and that she's not like everyone else," she added.

Wilcocks is collecting items to sell at a garage sale on June 15 in Victoria, hoping to raise $5,000. The proceeds will go directly to Molly's family to help pay her medical bills.

Once Molly stabilizes, doctors will perform an MRI to try to find the cause of the seizures, her father said.

"We are taking things minute by minute and we are so grateful to everyone helping to spread the word. It helps us so much to know that thousands of her cyber-family are praying for her," Campbell wrote in Molly's blog.