hi sarah, i hope you are feeling a bit better this evening. <hug>
i've had lots of days like the one you've had today.
it took barkley quite a while to get used to having his ears brushed. i wondered if the brush i had was too harsh (it had metal bristles) so i used a much softer (almost too soft) brush for a time and he quickly relaxed and started to enjoy it. now i use that one unless he really has bits that need to be tackled with the wire brush and he is much better. mats are another story- he currently gets very snappy when we go near him with scissors so i have twice had to get the vet to sort them out. i'm working on it though.

t-touch is definitely worth trying. along with the suggestion of making it a completely new routine, like teaching a new trick.
re. mollie being a little wotsit whilst out walking, we had days like this was barkley right through his first 18 months or so. there were some days when he was just hopeless- completely lacking in recall, or good manners whilst onlead. grabbing hold of it and getting bitey was a favourite trick. we learnt that responding only made it worse, so we calmly ask him to sit down, reward him by making a big fuss and lots of cuddles because he's actually done something we've asked of him and then wait a moment or two before calmly walking on. if he jumps about again, we repeat. eventually he calms down and walks on happily.
barkley is now just over 2 and there has definitely been a
huge change in him in just the last few months. his recall is now pretty good- he can still go amazingly deaf when it suits him but he is much more predictable and really does stop and come back far more than he would have done 6 months ago. he is a lot calmer in general. crazy phases and biteness only last for moments and normally a 'barkley, stop being a muppet and calm down' from me is enough to sort him out.
i think more than anything else, we now know each other pretty well. consistency is still vital as he is smart enough to quickly work out how to bend things to suit him. he is a stubborn wotsit who will always have a few issues but we know much better how to deal with him now (he's our first dog and it's been a real learning curve). i am more relaxed and he is more relaxed. we live together much more harmoniously and i'm sure that's how it will be for you and mollie too.

sorry for waffling on! it's just that your original post really struck a chord with me.