I think it is much more emotional with your Mum because a mother daughter relationship is different to all your other relationships. I think it comes back to when you were young and anything was wrong, it was your Mum who could fix it and make you feel better. In this case she will want to be there for you but the reality is that she can not fix this for you. I found it tough to speak to my Mum at first but you get through this with a few tears and it gets easier as you know more about what is ahead for you.
Hope all goes well with your specialist appointment. Let us know how you go. Good luck and take care. Deanne xxx