Avoidance
Two days has passed and Sara has missed out her chances to apologise to Lucas. In those two days, not even once did Lucas contact her nor did he come to see her for their usual lunch date.
Her assumption was that Lucas must have been very crossed with her and her only solution to such was to leave him alone because that was what she would have wanted. She can only conclude that Lucas would want the same as hers. What else could she think of? Her social skill has been pretty lacking from the start.
She, however, is a firm believer in apologising no matter how late but the word sorry felt heavier to be uttered than other words.
Every single time she tried to call Lucas, she could not bring herself to say the word sorry and how to overcome the conversation from thereon.