The red string bracelet is worn on the left wrist by people with anorexia, specifically people who participate in the Pro-Ana movement. They do this to keep reminding themselves that they're doing good when they don't eat and to try to find other anorexics in real life.
Bulimics wear a Blue string bracelet on their right wrist for the same reasons
The ability girls and women have developed to hold several items at once in one hand. The skill has been developed due to the lack of pockets in women's clothing.
I thought she'd need multiple trips to carry her phone, keys, wallet, and Starbucks to her car since she needed the other hand to open the door, but she used her impressive girl grip to carry everything in one hand.