Deep voice. One that you would hear from a 30-40 year old woman. 

Megumi appeared as a kind, smart, and possibly analytical woman, not straying from being able to tell what a young Keiji's strengths and weaknesses were.

Despite this, she had a nonchalant demeanor around her, shown best when a young Keiji confronted her about making a backroom deal to save him from being fired. She was also described as shady by unknown police officers, assumed to have done similar things in the past.