A allegedly drunk California driver has been charged this week after killing a mother who was on her way home from visiting her premature twins in hospital.

Twenty-one-year-old Alexis Cina was almost three times over the legal limit when she lost control of her car, crossed the central median and slammed into mom-of-six Katie Evans, 37, in a horrific crash in Santa Clarita on October 6.

Evans had recently given birth to twin girls Sarah and Hannah - who were twelve weeks premature and weighed just one pound when they were born - and was on her way home from visiting the eight-week-old babies in hospital when she was killed.

She leaves behind her husband Jacob who works at an aerospace firm and four other boys: 12-year-old Spencer, 11-year-old Travis, nine-year-old Nathaniel and two-year-old Gideon.

Arrested: Alexis Cina, 21, has been arrested and charged with manslaughter after killing a mom of six in a horrific crash

Tragedy: Mother of six Katie Evans was on her way home from hospital after visiting her premature twin daughters Sarah and Hannah (pictured) before the horrific crash

Evans' body was thrown from her car and she was declared dead by first responders at the scene of the crash .

Cina was arrested on suspicion of drunk driving at the scene of the crash and had a blood alcohol content of .21, far above the legal limit of .08, according to the Sheriff's department.

But it was only on October 18 that Cina was charged with felony vehicular manslaughter and felony driving under the influence, causing injury after being released on $200,000 bail.

Evans' husband Jacob has been left devastated by the crash, and he has spoken about the heartbreaking night he lost his wife.

He told People: “The last time I spoke to Katie was 11 o’ clock that night. She called me to let me know that she was going to be coming home … the hours between 2:30 [a.m.] and 5:30 [a.m.] were the longest of my life.

'I called the hospital and she hadn’t been admitted so I was pretty sure that she hadn’t made it.'

Ms Evans of Saugus in Santa Clarita Valley in California is survived by her husband Jacob, the twins, not pictured, and her sons Spencer, 12, Travis, 11, Nathaniel, 9 and Gideon, 2

Husband Jacob snuggling of the twins inside the California NICU

Evans' twins were born twelve weeks premature by emergency C-section and weighed just one pound each.

She had previously had three miscarriages but she and her husband wanted to have another child similar to the age of their youngest son.

When she learned she was pregnant with two girls, she was delighted.

Her husband said: 'She waited 15 years for these girls. They were incredibly precious to her.'

Her death has left her family devastated and her friends have set up a You Caring fundraiser to raise money for her family.

Natalie Mortensen who set up the fundraiser wrote: 'Katie couldn't go a day without visiting her brand-new twin girls in the hospital.

'She was a devoted mother, sister and wife and will be immensely missed. Jacob is left to care for 6 kids by himself. There will be many childcare costs as well as unforeseen expenses.

A fundraiser for the family set up after Natalie's tragic death has raised over $300,000

'We know many would like to help but don't know how to, or are too far away to help in person. If you would like to donate towards childcare and other expenses, you could make Jacob's life a little easier.'

Initially, the target was set at $100,000 but this has been bumped to $500,000.

Ms Mortensen added: 'Initially, Jacob thought he would have to uproot his kids and move them close to family but due to your generosity, he's now beginning to explore how he can keep the family in Southern California with their friends and neighbors.

'We do not know how large expenses will be, but are very grateful for your generosity to my brother and his family.'

Manslaughter charges: Cina was arrested at the scene of the crash and has now been charged with manslaughter after being released on bail