Hi there and welcome to med help. You say that she has brain damage and neurological issues---- very sorry to hear this. My oldest child also has a neurological developmental delay he was born with. (I guess--- as it is sometimes hard to say exactly what caused these issues). My son went to an occupational therapist for several years that really helped.
It is great news that she understands things! That is fantastic. My son had some articulation and speech issues but also seemed to understand. We constantly read to him, had him watch us say words, etc. Always kept positive about it. We did fun activities for the mouth muscles. I used a cd called speechercize that was great. Things like making super silly faces to music and then freezing briefly as the music stopped. Tongue pulls where you pull the tongue in with force. Running tongue around the lips.. Making sounds. We worked on that kind of thing.
Does your child also have trouble with other motor activities? Does she trip a lot? Have any fine or gross motor difficulties?
Our occupational therapist helped us with behavior types of things. I would imagine that your daughter cries for two reasons and a third on top of that. Oh, okay and a fourth. First, she has trouble talking. That is frustrating and crying is a way of communicating. Second, her nervous system may have some issues and regulation of emotions is a common problem where crying and tantrums are more likely. Third, She indeed may just be frustrated about what she can and can't do. And last, she's at an age where MANY kids have trouble with appropriate control of emotions and have fits. Our OT worked on this with our son.
I know you mention some medications she's taken but what sorts of therapies is she in. This is really key in my opinion.
With the right therapy, kids definitely improve. My son is now 10 years old, advanced academically, plays sports, plays an instrument, has friends and is a pretty successful, happy kid. Would not have believed it when he was 3.5!
I'm here to chat any time!