I'm a music teacher and parent of musicians. I think some people have given the OP a hard time. It's not as if she wants her DD to be the next virtuoso...!
FWIW, I do agree with some posters that you either need a new teacher, or at the very least a conversation with the existing one. In my experience, some instrumental teachers are quite "one dimensional" in the way they work. They have one way and that is the only way. I've been there with DD1 and it was hard work. DD1 didn't get one piece at all. The teacher insisted that DD played the piece correctly before moving on. I don't understand that mentality; some kids have make a journey round a problem rather than just smashing it down, but this teacher didn't get that. We moved to someone more flexible and DD flew after that.
When I'm teaching one-to-one, I ask my pupils each term what they want to achieve. My 8 year old student struggles to articulate this, but he is very young. We focus instead of having fun, learning new stuff (sometimes it's just a bowing pattern or a new note) and I make up silly stuff for him to do which keeps him motivated. Over the last 2 months, he has really blossomed as a player, so I think maturity has a lot to do with it. When we come back a couple of weeks later to something he found tricky before, he gets it much more readily.
I think lots of praise for just a few minutes regularly is the way to go. Before school is good because you only have a finite amount of time, so give her a timer and make her stop after 5, 7 or 10 minutes. I would start at 5 and when the time is up, ask her to stop and praise her for doing so well. If she does 5 minutes 4 or 5 times per week, increase it by a minute after a couple of weeks and keep up the praise. And see if Santa can bring her a book of "fun" violin pieces, such as Disney, hopefully with CD backing tracks. It's better to play something than not play.