What's Robin Searching For?

Robin mentioned her trip to Germany again, so Howard stopped her: "I feel you're searching."

Robin shrugged: "Isn't that what life is all about?"

Howard thought Robin's 'search' was growing frantic ("You are on fire.") and could interfere with her training for the NY Marathon: "This is too much. You're running around like a maniac...I do sound like my mother. I'll admit that."