Ryan, it’s okay.
Don’t worry.
[You may get more emphasis if she uses one phrase instead of two phrases saying the same thing twice.
Also, is this is a 'worry' -- or something more frightening? ]
'We’ll find Mmom and Ddad.
[Caps, because they are proper names.
And I'd just continue this on to the next sentence, rather than leaving that fragment there.
I have no objections to fragments,
but I think the sense of this passage is that this sentence and the following fragment make a complete thought. ]
Just as soon as we can.
Take a deep breath and relax.”
[If this is serious, then maybe he shouldn't relax.
Maybe he should get a grip or buck up or stop fricking having hysterics or concentrate on the matter at hand or try to fight off the anxiety attack in an intelligent manner.
-- 'Take a deep breath and tell me everything you remember about the accident.'
-- 'Take a deep breath and hold me. I'm scared. I need your help.'
-- 'Take deep breath and count to ten. You remember what Dr. Pierce told you.']
[Here we move into the mixed POV.
She feels./He feels.
Let's assume Megan is the POV character.]
She took his shoulder and felt his heart racing. [Which is maybe an exaggeration, but not toooo unbelievable] .
Ryan He [use of the name to keep us in her POV, but this is a choice thingum, here.]
gripped the table [I can't spell either. I would have missed this]
desperately, shaking and pale, breathing fast.
as though fighting back the sudden urge to vomit. [vomit is all very well in its way, but hard to discuss exhaustively in her POV]
But
[the secret of 'but' is that it is not merely a handy conjunction we use when 'and' grows tedious.
'But' means ...
'this contradicts what came before.'
'This is unexpected.'
If you can substitute 'and' or 'then' or 'therefore', without changing the meaning of the sentence ... you should not be using 'but'.
Is there is a contractiction between him feeling sick and her comforting and supporting him?
If not -- no 'but'.
If you want to use 'but' ... then you should say something about him almost having a fullblown attack but ... and go on to contrast the final result]
She Megan
[Her POV so she gets the default pronoun.]
kept
[we didn't actually have her 'putting' the arm on the shoulder before. Then we have her 'keeping' it there.
So one choice would be to first put the arm on his shoulder and then ...]
held him
her arm over his shoulder and soothed the anxiety attack before it became worse.
[Now ... in her POV ... I would probably first describe how he looked to her and then have her take action. So first the pale and shivering and then the arm around the shoulder. I'd do that because it's a natural order of encounter ... sight, then touch afterwards.
That leads us through her involvement with him in a logical sequence
that goes from sensory --tactile and sight,
to theoretical -- talking about anxiety attacks.
But I didn't switch 'em around here.]
---
************
Ryan, it’s okay. We’ll find Mom and Dad just as soon as we can. Take a deep breath and count to ten. You remember what Dr. Pierce told you.
She took his shoulder and felt his heart racing. Ryan gripped the tabletop desperately, shaking and pale, breathing fast. She held him and soothed away the anxiety attack before it became worse.
*************
.
.