Whoops! Missed that somehow.
Grapple Check 01: (1d20+22)[26]
Grapple Check 02: (1d20+22)[27]
So, I rewrote the post to do the two attacks of opportunity, and then attacking once (can still attack with a light weapon, but only once and not a full attack) as Myriad's action, since she has no way to escape the grapple.