Sounds like she's going through a bit of sleep regression. Hang in there, it'll get better.
Babies don't really need water under one unless it's really hot, so I'd stop offering it to her and give her milk instead. Don't worry if she pushes it away, some is better than none and she'll take what she needs.
Are you producing enough breastmilk to keep her satisfied? We found our DD struggled with being BF alone and ended up topping her up with Aptamil Pro Futura. Even if it's just to get her through the growth spurt she's probably having, it's worth considering BF and formula feeding for a while to see how she is.
If she's refusing meals, it's likely she needs a bit more sustenance to keep her full at night. Ours started refusing anything savoury, she had a radar for when I was offering sweet potato and vegetables vs fruit! Instead of not giving it to her, we found distracting her worked well. I would prop my phone up on her tray with a Simple Songs cartoon playing, then she'd happily watch that and eat the whole bowl. This only lasted a couple of weeks and she's back to eating without the need for cartoons anymore.
Are you still offering her single foods for meals? It might be time to add in combinations. Not sure how you're prepping, but we found pureeing all the fruit and veg, placing in ice cube trays popping in the freezer, and then making different combinations worked well for us. It means she gets to know different flavours without having to lose my mind over prepping every mealtime.
Is it possible she's teething at the moment? The pain in her gums could be waking her up at night. We gave a dose of Calpol before bedtime milk kept her asleep for most of the night. Prior to that, she was waking up at 11/12 and again at 2/3. Ours goes to bed at a similar time to yours and was regularly waking at 7am, so I don't think the time she's going to bed is a concern (all babies are different, not all of them love a 7pm bed time!). As long as they're getting 10-12 hours a night.
Another thing we noticed, if we tired her out a bit more during the day she slept better. We make sure she gets at least one walk outside per day, along with time in her jumperoo, time in the playpen crawling around, and we introduced some new toys. All of that together worked for us, so worth a shot for you.