Thank you! All makes sense. I could ask our trainers, but sometimes I like to give them a break from our questions. LOL. Not that they mind.norseofcourse said:Yes, get her comfortable with you handling her mouth. It will be good if you can touch and rub her all over her muzzle without her getting mouthy or nippy. Also put a finger inside her mouth, at her bars where the bit will go, keeping it still until she is comfortable with that, then rubbing her bars and tongue a little (she may grow to like that).
Teaching her the cue to open her mouth for the bit might be a little difficult without the bit, but you can try that too (I used a small stick the first time or two, partly because I used it to measure for the correct bit size).
You can also teach her to lower her head on command, the most common cue for that is a bit of hand pressure on her poll. That makes putting a bridle on a horse much easier, and is a good thing for a horse to learn.
Just curious, what bit is your trainer recommending for her first one?