In regard to
the specific request regarding background information from scripture
about Abram’s the mother one has to say the bible is virtually silent
The Bible does not identify Abram’s mother, just his father.
Gen eleven:26-27 Now Terah lived 70 years, and begot Abram, Nahor, and Haran.This is the genealogy of Terah: Terah begot Abram, Nahor, and Haran. Haran begot Lot.
In fact the only reference to her is found in Gen 20:12 we reads: “Just indeed she [Sarai]is truly my sister. She is the girl of my father, but not the daughter of my mother; and she became my married woman.
Still because that Abram was called out of Ur (with his father) it is nearly likely that his mother was a local girl rather then one brought on a long journey from Canaan.
If the detail of Abram’s mother was significant to the story I call back the blanks would be filled in. I capeesh this is akin to an argument from silence but this is a hermeneutics board and i principle of biblical hermeneutics is that if the bible doesn’t give us a detail that item is not pertinent to our understanding of the story.
In regards to
other Jewish sources
in the Talmud (Baba Batra 91a) we read that her name was Amathlai, here is one translation of that portion of the Talmud
R. Hanan b. Raba further stated in the name of Rab: [The name of] the female parent of Abraham [was] Amathlai the daughter of Karnebo;
Kernebo could be ‘lamb of nebo’ and a reference to the mountain Nebo, which is the place Moses stood upon to await into the promised country (Deut 34:1) which could, if the source is reliable, potentially suggest a close racial link, i.e. make her a canaanite. However that is supposition. Nor do I the know dating or reliability of this document in regards to historical details like this.
In that location is also one Midrashic legend about the birth of Abraham that can be found in Midrash Avraham Avinu, plant in Ozar Midrashim (ed. Eisenstein, 1969, vol.1, pp., two-3). Another, slightly dissimilar version of this story appears in Sefer Hayashar, P. Bereishit, pp.eighteen-21. (source http://www.jewishmag.com/162mag/abraham_mother/abraham_mother.htm)