That was my first thought. But it was like this: She looked at her phone several times, put it away, thought, cried. Layne was awake, they talked, she dressed, he sat thoughtfully on the bed, he dressed, and both left the apartment.
Could it be that she got bad news, and the two went out to see someone?
Or: She looked at the screenshots of Layne here on her phone. And left him jealously! But why did he go with her?