Audrey took Prisca's horrible advice, actually ghosting Lucas because she was too shy to meet him in person. She thought it would be the best plan ever but Audrey was unaware she was getting deep into something she wouldn't ever be able to come out of.
After the gym session, she pledged to not pick up his calls, Lucas who was unaware of her train of thoughts tried calling her several times but he just couldn't reach her. It wasn't that Audrey didn't see his calls, she just decided to put her phone on airplane mode, the coping mechanism her brain had formulated while she was thinking over it.
As it was a Sunday, Audrey reluctantly got up, emotionally tired and physically stressed, walking to her closet to pick the clothes she was going to wear the next day. While she was sorting her clothes, she suddenly thought of ways to avoid going in the car with Lucas. She went to sleep soon after, unaware of the storm she had started.