Quoting Rebecca ELdridge Renaud:" My husband and I just had a meeting with our local Early Childhood intervention for our 7 month old. ... [snip!] ... of her body. We are not sure what to except and where hoping someone could give us an idea of what could go on from here. "
Is she using any consonent sounds? or just "a" sounds in different tones and patterns?
As for what to expect, at this stage speech therapy will probably involve mimicking games, and other game style activities to try and promote overall use of her mouth. As of yet I wouldn't think of it as "therapy".
For speech and communication, development can sometimes lag and then catch up. Although it may be scary to have an interventionist suggest speech therapy for your child, I would definitely embrace it. I am a supporter of early intervention, and if there is a developmental concern you can start working on it soon before it grows to impact future communication.
Have you had her hearing check? At a young age that is sometimes related to delays or an absence of speech and language development. From what I gathered from your OP, though, this may just be an issue of development in her mouth muscles - another skill to practice and strengthen like fine motor control!
I would imagine the SLP (speech and language pathologist) will give you some face to face games to play with your baby. Also, she may give you some suggestions for oral toys and particular textured foods that may aid your child's overall oral control!
I think it's great that you are able to obtain support this early, especially if it turns out to be a valid concern. Some children do not get support until they are school age, by then their peer interactions and literacy skills are already effected.