I have (2) Angels, 4 Neon Tetras, 6 Black Neons, 1
DG and 4 Corys with my
GBR (I had a pair in there but I lost my male) in my 55g. My Angels and my female GBR get along great. Althought she is small, she is tough and likes to hang out with the "big dogs" in my tank. She is usually the first one at the top of tank at feeding time and has no problems getting the food she wants.
She couldn't care less about the Tetras in there. It seems that she is more annoyed with my Corys than anyone else. It doesn't appear that she is hurting them, but she does like to chase them around a bit...especially when she is ready to lay her eggs.
My humble opinion is that you will be fine.