Easy things to do in San Diego while you are with your mother:
check out the Mall downtown.. It is called the Horton Plaza. Its an outdoor mall.. about 4 or 5 stories with zig-zag escalators and ramps leading up and down it. all doors to businesses face inward to an open atmosphere center. Park in the provided garage.. get validated to avoid charges..
See a movie in the mall's excellent theatre.
Go to [SIZE=-1]ghirardelli chocolates on the downtown streets, not one block from the mall, for an ultra intense chocolate shake, smoothie, banana-split or ice-cream cone.[/SIZE]
Ghirardelli Chocolate
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www.ghirardelli.com
643 5th Ave, San Diego - (619) 234-2449
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As America's longest continuously operating chocolate manufacturer, Ghirardelli has established its position as America's premium chocolate company for more than 150 years. We are one of very few American manufacturers that make chocolate starting from the cocoa bean through to finished products. Throughout the process, we take special steps to ensure that our premium chocolate delivers our signature intense, smooth-melting chocolate taste.
Hop on the trolley downtown (Since you are already there) and ride the redline trolly (stops in downtown about every other block east/west... not far from the chocolate shop) to Tijuana. Even if you don't go in to the inner city, the border tourist trap flea market area is a fun place to go (once or twice). Don't drive there.. tons of insurance and nuisance required..
Head on up I5 towards LA and go north of LA to Six Flags, Knott's Berry Farm, or Disney's California Adventure. (water parks at Six Flags, etc)
Enjoy!