But we did make a pact - if the man I was marrying wasn't good enough then she would send a thunder storm as a sign for me to get myself out of there. Eighteen years on, and I remember every single detail about that car journey.
Every girl getting married should be able to do so with the help of her mum. Throughout this process I have been acutely aware that I have missed out on so many special moments, and there have been plenty of times when, if I am honest, I have felt incredibly lonely. It still breaks my heart that I had to buy a wedding dress without her.
Having planned the big day without my mum's help, I will soon face my next personal battle - walking down the aisle without my dad to give me away.
My brother James and I are used to life without our parents, and, apart from the occasional inevitable low, we get on with day-to-day life without constantly feeling the ache of our loss.
But this, planning the wedding, has been so hard. My emotions as I approach 'D-day' are all over the place - I continuously battle to balance my excitement with the knowledge that the two people I want with me more than anything in the world will be missing.
On Sunday, it all became too much - Father's Day didn't help - and I cried, and cried, and cried. And Chris, now a master in these situations, behaved perfectly. Because there is nothing to say. There is nothing that will make everything alright, and nothing that will stop the lump rising in my throat every time I actually stop and think about them.
The only thing to do was to face the pain head on, and the end result - namely my tears - came as a relief to both us. Ever since this process began, I have taken great pains to focus on everything except the absence of my parents, and addressing that at the weekend went a long way to helping me find resolve.
There won't be a moment at the wedding that I won't think about my mum and dad, and it goes without saying that I wish more than anything they could be there with me. But I do take comfort knowing they will be proudly watching me as I look ahead to my future with Chris. Thunderstorms permitting of course.