So for the bold part, she is going behind the bit, and that is her evading the bit and your hand aids. You want her on the bit. You can tell because her head is probably way behind the vertical. You want their head on the vertical or slightly above it (that is hard to get on the lunge though)
Im glad you suggested that 101 schooling exercises, I have ordered that one already and im waiting for it to be delivered!
Thanks a lot for all your advice, its very kind of you. And im glad to read the OP is seeing an improvement