Mass Tucson shooting update

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TUCSON, Ariz. -- We found out Wednesday that Congresswoman Gabrielle Giffords still doesn't know the details of the Tucson mass shooting that left her with a severe brain injury.

Doctors at Giffords' Houston rehab facility say the congresswoman knows there was a traumatic event, but that it would be unfair to tell her everything before she can ask detailed questions.

Giffords will be back in surgery soon.

In a recent letter to friends, Giffords' mother wrote that doctors will replace part of Giffords' skull, which was removed to give her brain room to swell.

Giffords was one of 19 people shot outside a Tucson grocery story January 8.

And Pima County supervisors are honoring two of the six people who died in the rampage.

The board voted unanimously Tuesday to rename Cañada del Oro Linear River Park for Christina-Taylor Green.

Another unanimous vote renamed the Davidson Canyon Trailhead southeast of town for Gabe Zimmerman, the Giffords' aide who was also shot and killed.

Word from the White House, President Obama will sign the bill naming the federal courthouse in Yuma for Judge John Roll.

And for the first time since the shooting, Christina-Taylor Green's grandfather, former Major League Baseball pitcher and manager Dallas Green, spoke about the tragedy.

Wednesday at the Philadelphia Phillies' spring training complex in Clearwater, Florida, Green choked up a few times as he talked about his family's tremendous loss and the unexpected effect Christina's death had on the community and the nation.

"That little girl ah ah woke an awful lot of people up.  And ah we're ah we just, we just miss the hell out of her," said Dallas Green.

An avid hunter, Green also said he can not make sense of the laws that allow weapons like those used in the Tucson shooting to be sold.

And while many of the funds set up since January 8 are intended to help the victims of the mass shooting.  Wednesday, one was set up by a victim intended to help the community.

Congresswoman Giffords' staffer Ron Barber unveiled the fund for Civility, Respect and Understanding.  Its initial contribution will come from a big benefit concert next month.