Answered by Ustadh Tabraze Azam
Question: Assalamu alaikum,
Is my stepmother’s sister from my unmarriageable kin (mahram)?
Answer: Wa alaikum assalam wa rahmatullah,
I pray that this message finds you well, insha’Allah.
No, your stepmother’s sister is not from your unmarriageable kin (mahram).
You should avoid direct contact with her, but do so in a tactful manner.
Please see also: Who is Mahram
And Allah alone gives success.
Checked & Approved by Shaykh Faraz Rabbani