Yes, girls' voices go through a process of change, just like boys' voices do. This vocal change is known as "voice breaking" or "voice cracking," and it is a part of puberty. During this time, the larynx (voice box) grows in both boys and girls, and the vocal cords lengthen and thicken.
For girls, this process usually occurs between the ages of 10 and 14, but it can vary from person to person. As the vocal cords undergo these changes, the pitch of the voice may become lower, and the tone may also become more resonant and mature.
It's important to note that the degree of voice change can vary between individuals, and some girls may experience more noticeable changes than others. After this transitional period, the voice generally stabilizes, and the young woman will have a more adult-like voice. However, it's essential to remember that every individual is unique, and variations in voice characteristics are entirely normal.