ואם שלש אלה. פירש"י היעוד לו ולבנו והיא אין בידה לפדות עצמה. אבל אין לפרש ואם שלש אלה שאר כסות ועונה לא יעשה לה ויצאה חנם אין כסף לפי שהיה משמע שאפי' יעדה ולא קיים דברים הללו שיוצאה בסימנין ודבר פשוט הוא דכיון דיעדה שאינה יוצאה אלא בגט דאשתו גמורה היא: ואם שלש אלה לא יעשה לה, “and if her master had not performed any of the three options offered him by the Torah, etc.” Rashi spells out what these three options were; a) he marries her; b) his son marries her; c) she pays to redeem herself. The interpretation of the three options do not refer to her enduring upon being married to her former master that her husband marries someone else in addition, less frequent opportunities to marital relations with her husband. Her entitlements to clothing, marital relations are unimpaired. When she reaches puberty she goes free and must receive a definite document of divorce to ensure that she can marry without problems.
ויצאה חנם. אלו ימי נערות: ויצאה חנם, “she will leave for nothing without money” (to her master). This verse speaks of her leaving after having attained the status of נערה, the period between twelve years and a day, and twelve and a half years.
אין כסף. אלו ימי בגרות. וצריכי דאי לא כתיב אלא חד קרא הוה מוקמינן ליה אבגרות שהוא פשוט יותר ואי קשיא אם יוצאה בנערות בבגרות מאי בעיא גביה ובריש קידושין מסיק דלא נצרכה אלא לבגר דאילונית שאין לה סימני נערות דיוצאה בימי בגרות: The additional words: אין כסף, “without money changing hands,” apply to a situation in which she has attained the status of בגרות, biological maturity, i.e. over twelve and a half years of age. (Talmud, tractate Kiddushin folio 4) The reason this had to be added is that if the Torah had not written this, we would have assumed that already the words ויצאה חנם apply to her having this status, which would have been a simple assumption to make. In the event that you the reader would raise the question that seeing that this girl is legally entitled to leave the employ of her master already when having attained the status of נערה, why would the Torah have to add anything further, the answer to this question given by the Talmud we quoted, is that if she had displayed symptoms of being unable to bear children, i.e. she never displayed the symptoms attesting to the fact that she had matured biologically, in which case the Torah rules that when she attains the age of twelve and a half she must be given her freedom regardless of any other considerations.