Do i have the right to be miffed?

I decided to organise my own hen do for just 6 of us to Italy next month - me, my Mum, chief bridesmaid, second bridesmaid, younger bridesmaid & her Mum who is doing my hair & make up for the day. I have arranged it all & paid for it as a thank you present to all the ladies for being part of the wedding because I knew exactly what I wanted to do & didn't want anything outrageous organised for me. My CBM asked if she could do anything or get anything & the only thing I asked her to do was to sort some hen do "accessories" like a few sashes, novelty veil, some "bride to be" bits but nothing too tacky or expensive. I love her dearly & we've been friends for years, particularly close for the past 5 - 6 years but aside from being super organised with her job, she really has no sense of organisation & would rather throw money at a problem than actually do it herself. As suspected, we're a couple of weeks away & my Mum asked if she could get me some "L" plates for the hen & I said yes because CBM hadn't said anything about what she'd found or put together. I told CBM what my Mum wanted to get & her response was "well if your Mum wants to sort out all of the bits that's fine with me". I don't know why I was surprised but in the end I got the feeling that if I didn't organise it all myself, I'd end up with nothing & my parents are already contributing a great deal towards the day so asking my Mum to pay for more things felt far too cheeky. Going by this example, I have the feeling that CBM will be all talk when it comes to the day, she won't actually be any help to me & I'll end up mega stressed unless I organise everything to the nth degree (if you can't tell by now yes, I'm a control freak). We are going away on a pre-wedding trip together in June (that yes you've guessed it, I've organised) - should I drop it into conversation then that I'm really hoping for her full support on the wedding day? She's been married before so she should know how I'll be feeling, I just feel I shouldn't have to do all the running if she's already told me she will be there for me. She has a daughter who will not be coming to the wedding because she's deliberately told me she wants to concentrate on being there for me with no distractions. Please tell me I'm being paranoid & she will actually turn up for me when it counts?!