1st ever post, be gentle !

I booked a 4 person package ( flights & hotel ) for 4 nights to NYC from Glasgow via Heathrow out & Gatwick back during the recent BA world sale.
I failed to book the deal I wanted online but called and got a very helpful sales assistant who got the booking completed over the phone.
I explained that myself, my wife and my daughter and her friend would be the 4 passengers.
When I received the e-ticket receipt I noticed he had wrongly classed my daughters friend as a Miss instead of a Mrs.
When I contacted him his reply stated......."It doesn't make any difference at all so normally we wouldn't change because on ur passport it doesn't state what her title is"......

I have not yet completed our API but It doesn't ask for marital status.

Has anyone any past experience of this type of error and is there any, even remote, possibility that this could cause any issues for us?