You are not alone in your confidence crisis - been there, done that and I have been riding 35 years - my advice would be to take small steps, don't push it. Ride her when you feel you can, preferably with someone there, maybe after your friend lunges her on Thursday?
Always end on a good note even if that means getting off before you want to! Always have a plan of what you are going to do - that will give you something to think about and she will respond - nobody (and no horse) respects a leader who doesn't know where they are going!!
Always end on a good note even if that means getting off before you want to! Always have a plan of what you are going to do - that will give you something to think about and she will respond - nobody (and no horse) respects a leader who doesn't know where they are going!!