The arrest Monday came after the girl allegedly stabbed the man at least five times in the back, side and neck after he forbade her to use a cellphone, police Sgt. Rudy Lopez said.
The man was hospitalized in critical but stable condition, the San Antonio Express-News reported Tuesday.
No names were released.
Beyonce flaunts bikini body, Blue Ivy in vacation pics
Gal Gadot cast as Wonder Woman for 'Batman vs. Superman'