Firstly welcome to the chalkbucket. You'll find lots of helpful parents here who have dealt with issues just like you.
You really need to tell the coach that your daughter is upset by her yelling, you can explain that your daughter doesn ot do well with that kind of instruction. If there is a head coach it may be better to approach them and just state your case. If you don't complain nothing will change for sure, if you do complain things may change or you may simply realise that this is not the gym for her.
Remember you are paying this coach to train your child, they are providing a service, it should be non-abusive.