sponsor stepmoms visitor visa

[npalicha]

Hi
What documents does my friend to sponsor her stepmoms visa.

Is it okay to refer to her as mom, in the invitation letter, I-134, letter to consulate.

[alexromanov]

You can refer step-mother as your mother. That's fine.

You will need to prove how she is your step mom. In other words, you need to show her and your father's marriage certificate.