Greetings Jessica!
The
Southern California Resident 3-Day Ticket is a great option because it allows guests to enjoy the Disneyland Resort Parks for a fraction of the price!
I completely understand your intention to share the Magic with your sister and save her from spending money on a ticket admission. However, the rules for the Southern California Resident 3-day ticket offer clearly state that it's not transferable. The ticket must be used by the same guest for all the days included in the price.
On a brighter note, if you or your sister consider becoming Annual Passholders, the
Disney Southern California Select Passport is still available and if purchased before February 12, you can get 13 months for the price of 12.
Not to mention, the monthly payment plan can get you through the doors of the
Happiest Place on Earth at a really affordable price!
Thanks for stopping by the Disney Parks Mom Panel!
-Anabel M.