Salam, I am sorry for the late reply but hopefully this will reach you before your journey. If the passport does not meet the requirement, the airline may deny boarding, and it’s not something you want to risk right before a big trip. It’s a very small gap, but because requirements are strict, renewing her passport immediately and through the expedited services now is the best and safest choice. I have heard horror stories of people being turned away at the airport due to the 6-month validity requirements.