Mentioning it might lead to awkward pauses over the phone (in person, he might wonder why she was blushing.)

"Yes," she agrees whole-heartedly. "I'm just glad another day's done. I am looking at someone in the field in the next month, but we're not clear on that yet, so I'm just keeping busy.

"It's the Nexus. I'm not sure where to go now that certain events have occurred." She moves the phone for a moment so she isn't sighing directly into it. "I'm sorry about your friend. I haven't been able to make any progress."