Will You Get Caught for Switching Price Tags at a Store

My question involves criminal law for the state of: California

My friends switched price tags to pay a cheaper price on a couple pair of pants two days ago. She did this in the dressing room and was not caught. She paid with her credit card. At no point was she stopped. She is now extremely remorseful and feels terrible. She has been throwing up for the past couple of nights out of anxiety and thought about dropping the items back to the store (without a refund).

What is the likelihood that the retail store will try to track her down? How often does that happen, and how long does it take for the police to arrest after the fact? There may not be video evidence of the actual price tag switch, but there is video of her going in and out of the dressing room. This was her first offense and she will never do this again. It was about $150 in merchandise. Thanks in advance for the advice.

No one here has a crystal ball and we can't foretell the future. Your friend will just have to keep throwing up or forget about it until (if) she is either contacted by the store or the police.