Is it permissible for a girl to wear the niqab despite the opposition of her father, who sees the matter differently regarding its obligation, and threatens to expel her from the house?

The obligation for a woman to cover her face is a matter of scholarly disagreement. If the questioner believes it is obligatory, then she is not permitted to remove her niqab. However, if she believes it is recommended, the matter is easier. If she sees her suitor as worthy, of good character and religious devotion, and he promises to enable her to cover her face after marriage, then there is no harm in her removing her niqab in front of him, even though it is more complete for her to maintain her face covering. It must be noted that a suitor is a stranger to his fiancée until the marriage contract is concluded.