A 4-year-old is miraculously walking again, just weeks after being internally decapitated in a car crash. CBS affiliate KBOI 2News spoke with the boy and his mother for the first time since they were released from the hospital in Boise, Idaho.

In a Skype interview, the little boy named Killian said that his legs were hurting. His mother said that's due to all of the walking he's been doing. She says he had his first occupational therapy Wednesday.

"He's just doing awesome. He's motivated. So him doing that good makes me (feel) awesome," said mom Brandy Gonzalez.

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She and Killian were both injured when their car skidded into oncoming traffic while they were driving home from a birthday party during a hailstorm. The ligaments in the boy's neck that attach his skull to his spine were severed, a condition known as internal decapitation.

Gonzalez and Killian are now staying with family in Montana. They've been there since they were released from the hospital on Saturday.

She says the doctors think it will take about three to six months for Killian to make a full recovery.

"It's all about the attitude. He's mister go-getter. He's excited about every new thing he can do today that he wasn't able to do yesterday," she said.

He mirrors his mother's positivity in that way. She says the silver lining in all of this is the fact that she gets to spend one more year hanging out with him before he goes off to kindergarten.

Gonzalez broke most of her limbs in the crash, and says it could take anywhere from six months to a year for her to heal. Of course, she wishes she could walk, but she says "it's OK."

She also says she's been floored by the amount of support they've received.

Donations have come in from around the world to their GoFundMe page. Some people sent nearly a thousand dollars.

"I just broke down. I was touched," Gonzalez. "Because I'm like, they don't even know me and they're willing to do that."

A police officer and his wife who witnessed the crash helped Killian survive by holding the little boy's head straight for over half an hour.

Gonzales thinks she's finally found two other good Samaritans who helped get her out of the wreck. She reached out to them on Wednesday, but had not heard back immediately.