No, she cannot

Sophia found it hard to resist just taking the towel. It would have given her some very welcome cover, but it might mean the girl would come looking for her. If she caught up to her before she had her clothes back, she would have to explain the situation, which would get very awkward, very fast.

Still, now was the probably still the best time to make her move, whatever that would be. It looked like everyone was either changing back into their clothes in their stalls, or in the bathroom. This gave Sophia an opening to rush through the hallway without being seen, although she had to be quick and hope nobody else would enter the room from either direction.