The grass fight, November 28,1835, was between the Texans and Mexicans when Texans saw some Mexican soldiers which carried suspicious bags that looked like bags of silver so texans started a skirmish so get the supposed "silver".
The Texans won the skirmish and the Mexicans fled leaving all their belongings behind.
In the end when the Mexicans checked the suspicious bags, hoping they would be silver, instead texans found just a bunch of grass.
In March 10, 1836, Santa Anna abandoned Gonzalez and his people.
Santa Anna goes on a genreal retreat eastward.
Santa Anna succeeds in the invading Mexican army and is now safe.