It was also the first time she had told anyone the reason her and Ron broke up was due to them testifying for Malfoy. Even in the summer when it seemed that all she could do was drink, use Malfoy as an emotional crutch for a month and feel hot and hormonal for him, she did not spill that secret. She had wanted to keep it to herself for a while. She was ashamed mostly that in hindsight she must have known she used Ron’s feelings for her to coax him into doing it. She knew him well enough to realise he would follow her eventually, that was probably the thing that sealed her fate as a Slytherin, she made a mental note to add that to the list of reasons she wasn’t the same person and how it would affect her research.