With the ones I have rescued with MBD, no they didnt get very big.
You dont mention her age but mine were 4, 8 and 18 when I got them and both didnt get MBD until they were over age 2- had a great start and then feel into homes with poor care. The one that was 4 did grow a little but nothing compared to my "normal" igs.
She may tho, at least a little. I have seen amazing recovery and resilience out of iguanas, so she may surprise you!
To post a pic here y ou have to upload somewhere like photobucket then copy the direct image into the image option here on the message box where you type.