
I feel your pain! Willow hit hers at about the same time and was much the same, particularly spooky with dogs. I got her through it but the effects are still lingering - in the last couple of weeks she's been badly frightened by a couple of dog incidents and it's set her back straight away.
You'll need to be proactive about - ignoring will not help. You need to teach her that the things she's scared of are good - for Willow, this means that the moment she clocks another dog she's getting a click and a tasty treat, and then any time she's watching them and not barking I'm rewarding it. Because we've done this before, that first clicks sets her off into the pattern of look at dog, look at mum, get a treat so she's not stood staring at them and winding herself up, and she's progressing nicely.
I'd take it easy for a bit as well, so you don't overwhelm her while she's going through this. Yesterday Will had a big spook at a dog I hadn't spotted, much barking and she was off lead so she did a half-charge too, so she only had a 10 minute walk then chilled at home with a kong, rather than keep walking her and risk seeing more dogs that, with a now already heightened stress level, would only make things worse because she'd be that much more likely to react. It's knowing when to just stop and have a break as much as knowing you need to work them through it - it's a balance. Oh, and little dogs often worry big dogs as they are small, very quick and can get underneath and around feet ;-)
I would also back off from ringcraft for a little while or, if you can, just take her and hang out at the side. Certainly I'd hold off from letting the judges go over her - you said before she's shown teeth IIRC, she's already telling you she's not comfortable and right now, with all the other spookiness, pushing the issue will only make it worse. She needs to see that nothing's going to happen so if you can just chill out and spectate, that would be great - she can just take it in, watch what's happening and start to build the positive associations again (same as with dogs, rewarding when she sees other dogs there or the judge). If the judge would be willing to just give her a treat but not do anything with her, so much the better right now.
A caveat - it may be that she will never be totally happy with ringcraft now, sometimes it does happen. These fear periods don't generally have a lasting effect but for some dogs, they really can - I've known perfectly socialised dogs totally change at the second period and their owners did nothing wrong. Not saying this will happen, do keep working at it but slowly, but try not to put pressure on yourself and her to conquer the ringcraft issue - doing this can actually scupper your hopes! Any time I see a new client with a frightened dog, one of the first things I tell them is not to set very large goals, because the pressure of trying to reach them can totally undermine any progress. It's a mistake I've made - I learned it with my first rescue. I so wanted her to be totally happy around other dogs that all progress stalled, but when I finally admitted she might not be and relaxed a bit, suddenly she progressed very quickly and in the end, actually was happy around most dogs!