There's a chance she is going for a walk or some form of exercise. It's healthy and a good way to relax. Maybe she likes to explore the neighborhood or go to the park to enjoy nature.
She might be going out to meet friends. It could be for a coffee or just to have a chat and catch up.
One possible reason is that she might be anemic. Lack of enough iron in the body can lead to anemia which may result in fainting spells. Standing up too quickly can also cause a drop in blood pressure and make her pass out, this is called orthostatic hypotension. Additionally, certain medications she might be taking could have side effects that lead to fainting.
Just tell her to have a good time. Simple words of support can mean a lot.
There could be several reasons. One common reason might be a sudden drop in blood pressure. Another could be related to underlying heart conditions that are exacerbated during physical exertion. It could also be due to a lack of oxygen, perhaps if there were some sort of airway obstruction during the activity.
She might be in a hurry. Maybe she overslept and had to quickly throw on a dress to run an important errand like picking up the kids from school.
She may do it because she values the community aspect of life. By being friendly and helpful to her husband's friends, she is building a network of relationships that can be beneficial for everyone involved. Additionally, it could be that she has her own motives, like getting help or support from them in the future. But most likely, it's out of love and respect for her husband and his relationships.
Another reason might be related to a new piece of technology. For example, if there was a malfunction in some experimental Stark Industries device that emitted some sort of energy wave. Pepper, being close to it, could have been affected and passed out as a result.
Maybe she wanted to be more comfortable. Parties can be long and wearing a bra might feel restrictive.
One reason could be that she wants some alone time. Maybe she's feeling stressed at home and just needs a break. For example, if there are constant family arguments or too many household chores piling up, she might feel the need to escape for a while.
A positive aspect is that it gives her a break from her daily routine. She can unwind and be herself. For example, if she has a stressful job at home taking care of the family, this time out allows her to just focus on having fun.
Maybe she is interested in the unique architecture and interior design of the theater. Some old - style theaters have a very charming and nostalgic atmosphere.