Well, she did vote to support school marshals, and firearms in vehicles on campus in 2013. She also says she owns a gun. In 2011, she voted against campus carry, and in FtW, she supported background checks at gun shows (which is not inconsistent with her statement of wanting to keep guns from entally ill people). So mixed message.
Personally, I think she's just trying to get the issue off the table with Abbott, because she knows her Dems won't support it anyway.