Peace be upon you.
Ayatollah Khamenei (may Allah protect him):
Merely having a heart's consent is not sufficient for the validity of the contract and to avoid it being considered as a mere option that requires permission; if she is present at the time of the contract and is pleased with it but does not express any words or actions indicating her consent, it is apparent that it is merely an option. However, silence may be interpreted as consent, and this is how the narrations regarding the silence of a virgin should be understood.
Ayatollah Sistani (may Allah protect him):
Regarding a virgin, if her state indicates consent and she remains silent out of shyness without verbally expressing permission, that is sufficient, and her silence is considered her permission.
May you be successful in all good.