אבן העזר קמ״אEven HaEzer 141

Se’if 1א׳

הָאִשָּׁה יְכוֹלָה לַעֲשׂוֹת שָׁלִיחַ לְקַבֵּל גִּטָּהּ מִיַּד שְׁלִיחַ בַּעְלָהּ. בַּמֶּה דְּבָרִים אֲמוּרִים, שֶׁעָשְׂתָה שָׁלִיחַ אַחֵר לְקַבֵּל מִמֶּנּוּ. אֲבָל אִם אָמְרָה לִשְׁלִיחַ הַבַּעַל: יִהְיֶה גֵּט זֶה פִּקָּדוֹן אֶצְלְךָ, אוֹ שֶׁאָמְרָה לוֹ: הֲרֵי אַתָּה שָׁלִיחַ לְקַבְּלוֹ לִי, וְיֵשׁ אוֹמְרִים אֲפִלּוּ לֹא אָמְרָה לוֹ רַק: תִּתְקַּבֵּל (בֵּית יוֹסֵף בְּשֵׁם הָרַמְבַּ"ן וְהָרַשְׁבָּ"א), הֲרֵי זוֹ סְפֵק מְגֹרֶשֶׁת, עַד שֶׁיַּגִּיעַ גֵּט לְיָדָהּ, וּמִשֶּׁיַּגִּיעַ לְיָדָהּ תִּתְגָּרֵשׁ וַדַּאי. הַגָּה: אָמְרָה הָאִשָּׁה לִשְׁלוּחָהּ לְקַבֵּל הַגֵּט מִיַּד בַּעְלָהּ, אֵין לְקַבְּלוֹ מִיַּד שְׁלוּחוֹ. אֲבָל אָמְרָה: קַבֵּל גֵּט מִבַּעְלִי, יָכוֹל לְקַבְּלוֹ מִיַּד שְׁלוּחוֹ (תְּשׁוּבַת רַשְׁבָּ"א אֶלֶף ר"נ). וְיֵשׁ אוֹמְרִים שֶׁאֵין הָאִשָּׁה יְכוֹלָה לַעֲשׂוֹת שָׁלִיחַ לְקַבֵּל מִיַּד שְׁלִיחַ בַּעְלָהּ:

The woman is able to make [appoint] an agent to accept her Get from the hand of her husband's agent. What case are we talking about here[?], that she made another agent to accept it from him. But if she said to the agent of her husband, "This Get shall be entrusted to you", or she said to him, "Behold you are an agent who will accept it for me", and there are those who say even if she only said, "You will accept it." (Beit Yosef in the name of the Ramban and the Rashba), behold this is a doubtful divorce, until the Get will arrive to her hand, and when it arrives to her hand she will surely be divorced. Gloss: The wife said to her agent to accept the Get from the hand of her husband, he does not accept it from the hand of his [the husband's] agent. But if she said: "Accept the Get from my husband, it is possible to accept it from the hand of his agent (Responsa of the Rashba 1,250) And there are those who say that the wife is not able to make an agent to accept [the Get] from the hand of her husband's agent.

Se’if 2ב׳

נַעֲרָה הַמְאֹרָסָה, אַף עַל פִּי שֶׁמִּתְגָּרֶשֶׁת בְּקַבָּלַת גִּטָּהּ בְּיָדָהּ כְּמוֹ קַבָּלַת אָבִיהָ, אָבִיהָ יָכוֹל לַעֲשׂוֹת שְׁלִיחַ קַבָּלָה; אֲבָל הִיא אֵינָהּ יְכוֹלָה לַעֲשׂוֹת שְׁלִיחַ קַבָּלָה, אֶלָּא אִם כֵּן אֵין לָהּ אָב, אוֹ שֶׁנִּשֵּׂאת:

A betrothed (through erusin) maiden (between the ages of 12 and 12.5 years), even though she is divorced by receipt of the get into her own hand just as [she is divorced] by her father's receipt [of the get], her father may appoint an agent for receipt, but she may not appoint an agent unless she has no father, or she has been fully married (through nisuin).

Se’if 3ג׳

קְטַנָּה, אֲפִלּוּ אֵין לָהּ אָב, אוֹ שֶׁנִּשֵּׂאת, אֵינָהּ יְכוֹלָה לַעֲשׂוֹת שְׁלִיחַ קַבָּלָה; אֲבָל אָבִיהָ יָכוֹל לַעֲשׂוֹתוֹ, אִם הִיא אֲרוּסָה:

A minor, even is she has no father or she has been fully married (through nisuin) cannot appoint an agent for receiving a get, but her father may appoint an agen if she was [only] betrothed (through erusin; but not if she was fully married through nisuin).