What is the penalty in California for theft of $200 if i returned it bfore i was to get arrested?

me and my girlfrind had an argument over money and i asked her tput 200dollars of her 300dollars from her SSI check in my bank account which she agreed to a week ago but changed her mind at he last minute. she has VERY bad spending habits and she knows she has a problem budgeting her money wich has been a serious problem the last 3months so i agressivly took her money from her wallet which was in her hand after a little struggle to put away so she can save it so we can geta place 2gether. ive benn tellin her its for her own good and our future to prevent her from goin on spending binges. I gave back to her within 10 minutes of takin it but anyway called cops on me which i didnt stick around and ran cause i was scared....So what im askin is what are the penalities if any for this....yes i took the money but gave it back to her which she failed t mention to cops and i have no proir record whatsoever..no jail or prison..no parkin tickets, no traffic violations (i dont drive). So given the fact i returned the money, and she wants t drop he charges and have no criminal record of either felony or misdemeanor, what can I expect to happen to me..Oh by the way, we reconciled and thoth it over .....so should i be woried? Is she abl to drop the charges or is it up t the D.A.'s office? Im also a former Navy veteran who served durin Persian Gul War era if that matters, which i doubt but thought i mite mention it anyway...