In my school we have inclusion classrooms and we work through the co-teaching model. As the special education specialist I have been with content specialists in a variety of subject areas (Biology, Environmental Science, Algebra, Integrated Math, US History and English 9), [I have also taught in third, fourth, fifth, seventh and eighth grade and I ran a Structured Learning Classroom] and I know from experience that the same student will react differently in different classrooms based solely on these two things, teacher expectations and consistency in curriculum.
I had, in fact, 14 students (all on IEPS) who attended two classes in the same semester whose behavior was day and night in the two rooms. Since the subjects were Biology and Integrated Math you could argue that they might be better or worse in one subject or the other but you can not argue that time of day or day of the week was a factor because the rotation of the classes did not matter, nor did the day of the week. In one class, there were 18 students. In the other there were 25. In one class, the curriculum kept moving and each thing built upon the last. In the other, curriculum jumped all around, the students had too much unguided time, and expectations varied from day to day. (In case you were wondering they did much better in the Biology class with 25 students and a very demanding curriculum, then they did in the Math class with fewer students and less structure or hands-on work.) Thankfully, that teacher no longer works in our high school.
So the question is: What are your expectations of students in your classroom? For example, in all of my classrooms I tell students that they are not allowed to leave the classroom when directions are being given, and only one student is allowed to leave at a time. My co-teachers have varying expectations as to when students can leave (still respecting my expectation that no one will leave during directions) and what they have to do to leave (ask permission, get the pass and sign out, go at the beginning or end of class, or limit the times they are out of the room per week). All of these expectations are understood so the students act accordingly. Some of my co-teachers tell the student that they need to raise their hands to respond, others do not. However, in the classrooms that do not have this as an expectation, students are guided towards the correct time to be responding so it is not a shouting session.
Another thing to consider for a student "who doesn't get it" that repeating something in the same manner doesn't mean she now gets it. You probably should consider a behavior intervention plan (BIP) [or whatever your school calls these plans]. I would recommend that you sit with the student and develop this plan together. For example, the student might have other work that she could pull out or work on until you were able to come over to her and help her. You can agree on a signal so that you know when she needs help and she knows that you have seen her "cry for help". You can remind her quietly and when you are near her to raise her hand and not shout out when she doesn't understand something. Or you can remind her with a quiet hand signal of your finger to your lip from a distance. Then work on this lagging skill as a whole class skill if you have several students with the same issue. It is important not to point her out as attention is attention whether it is positive or negative and you would be encouraging it to continue.
Last, you need to be sure that nothing else is going on with the child. I had a student the other day who would not stop interrupting the class. Having been in my classes before and with the co-teacher before he knew our expectations and had generally followed them even though he struggled daily with anxiety and ADHD issues even after taking medication. I was finally forced to take him out of the room and as I walked him to the office (a luxury sometimes of the second teacher in the room, other times we have the VP come get students but we never just send them to the hall, though I do bring students to the hall to have private discussions with them.). The student told me that both that co-teacher and his english teacher were giving him a hard time. Since I knew that was not the nature of either of those teachers I sought out the English teacher. I found that the entire family had become homeless and were living in a variety of places (his brother posted the info on Facebook). That explains a lot! Something to think about.