Will a Store Figure Out that a Customer Stole Jewelry

My friend was at Spencers yesterday. She messaged me in a very distraut matter. She said that she took a couple pairs of earrings, when she went to the counter to look at the pins (just look)she said the women asked her if she wanted to purchase the earrings. My friend replied with around "No, I'm only looking around and I put them back." She looked at the pins a little more and went to go find her boyfriend and little brother, as they exited the store she said that she saw the lady looking at the earring rack. They ended up leaving after that shop. She said that she made sure the women didn't see and hid well, but she is terrified that she got caught. Did she?

Did she get caught? Yeah. Is anything likely to come of it? Probably not as long as she stays outta Spencers. It's possible a police report was made. Mall security may have been informed as well. If they were, it is possible your friend may be banned from the mall if they see her there.

She is really messed up, how long until she can relax? Everyone said that she'd be fine and she is Okay because they didn't confiscate her bag or pull her to the back, but she is still freaking out.

She can relax when the statute of limitations has run out. You have not indicated your state so we cannot say how long that will be, but in most states that will be at least a year.

Delaware

Theft of under $1500 is a class A misdemeanor in Delaware. The statute of limitations is 3 years.

What does a class A misdemeanor mean?

That is the classification of the charge that your friend's actions would fall under.

She would go to jail

Unfortunately, no, she probably wouldn't go to jail, not if this is a first offense. She'd be fined, and possibly even given some kind of diversion program. Delaware also provides for the store to make a civil demand where she would have to reimburse them plus.