Hi Paula - I'm sure you and I chatted on another thread about late talking twins some months ago -cos I was worried about my twins too.
My ds and dd are 2.10mths and I finally succumbed to a SALT appointment which we attended in May. It was at my request, as I wanted to get to the bottom of a 'problem' if there was one and felt that leaving things would do them no favours in the long run.
I admit I had put off doing this though, because like you, I was conviced blame was on the cards and coming my way. I knew we'd done all the usual things to encourage proper speech with them, but, there they were, not talking too well, so it just HAD to be down to me. You see, I'd already done the honours and blamed myself!
Before we went, I felt extremely defensive about it all - some nosey professional was going to haul me over the coals for failing to be a good enough mother. I admit I got uptight about it all in a big way because the last thing in the world you want to hear is that your parenting skills aren't up to scratch.
The appointment went pretty much as JimJams and the other posters describe - and to my surprise, there wasn't too much emphasis on the fact that they are twins. Each child was assessed as an individual and the 'twin language' side of things and the fact they're together so much was touched upon but not flogged to death.
The SALT lady seemed to know her stuff (we may have been lucky there though as I guess these things can vary, as JJ says) and..she didn't blame me, or any one else. She just said that, yes, they were a little delayed - not much. They'd almost certainly catch up - especially at pre-school when they start in Sept. Their understanding of words was fine, but that their speech would improve in time (and it is, although we've still some way to go on occasions, I think). She gave us some tips - commonsense stuff which we were already doing but with an emphasis on some things that they were a bit weak on. We have an open appointment to go back in December if we wish - no pressure -but she did not detect a major problem at this stage.
I'm hoping things will continue to improve and of course I'm still watching them closely, but not in quite the anxious way I was before because I feel more supported with this. The thing is though, despite my anxieties I didn't come away criticised, but reassured and happier about it all than when I went in.
I really hope you come out of this feeling reassured too, and that everything can be sorted out easily and quickly. You certainly don't come across on MN as a bad mother in any way - quite the opposite. Lots of luck