Her husband had intercourse with her, then her period came – when should she do ghusl?

Praise be to Allah.

If a husband has intercourse with his wife, then her period comes before she does ghusl from janaabah (impurity following sexual activity), she does not have to do ghusl from janaabah until her period ends. But if she wants to recite Qur’aan, then she must do ghusl from janaabah, because one who is in a state of janaabah is not permitted to recite Qur’aan, according to the soundest scholarly opinion.