I don't think we ever learned what she called her mother to her face, but when talking about her, Tara used 'mother' like in the following scene from The Body:
TARA: My mother died when I was seventeen. BUFFY: I didn't know. I'm sorry.
Willow: How long have you been practicing? Tara: Always, I mean, since I um, was little... my, my mom used to, She um, she had a lot of power, like you.
From what others have already said about canon and from where we pontificated (way back when) Tara was from, 'mom' is how Tara would address her mother.
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on 2006-01-06 11:42 pm (UTC)TARA: My mother died when I was seventeen.
BUFFY: I didn't know. I'm sorry.
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on 2006-01-07 12:02 am (UTC)Willow: How long have you been practicing?
Tara: Always, I mean, since I um, was little... my, my mom used to,
She um, she had a lot of power, like you.
I think "Momma" sounds in character.
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on 2006-01-07 12:06 am (UTC)(no subject)
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