By a year old she should be just drinking 12 oz. of breastmilk/formula/wholemilk/soymilk per day. Time to eat more solids, right? :) As far as the timing of her meals, she could easily be ready to eat the 3 standard meals a day like we do. Rejecting a nighttime bottle is not a problem, she can handle sleeping through the night without the extra calories, and its better for her stomach and life long habits anyway, so just go with it.
As for the sippy cup delema. Yes at a year old the bottle should disappear. And it needs to be gone for GOOD. Actually throw them away or give them away. You don't want to be tempted to give them back to her. I'd suggest using a nuby soft spout sippy cup. Its very similar to a bottle since its soft, but a different shape and she'd need to kind of bite it to get the valve to open. It was a good transition sippy for my oldest who struggled with sucking in every way (breastfeeding, bottle, straw, sippy, etc...). I got her to drink water from the sippy and milk from a bottle around 9 months old, and then at about 11 I threw away the bottles. She would have NONE of it, drinking milk from sippy! She threw a fit, screaming, flailing... It was a mess. And I KNEW she was able to drink from it since she'd been drinking water from it for months. It was bottle separation anxiety. I'm not suggesting you try to get your daughter to drink from a sippy before putting milk in it, but just letting you know this is normal whether they can drink from one already or not. My youngest didn't want to drink much out of the sippy as long as I was still breastfeeding her. Once that ended, she did fine. She did not struggle with sucking like the oldest, and she's been able to use any type of sippy cup, hard and soft spouts without any help from me. She even drinks from a straw without help.
Now as far as how I handled the screaming thrashing child who wouldn't drink from a sippy cup... :) Yes she did it the first day. She refused it at first, and got more and more hysterical. I got out a banana, and got her to eat that, it calmed her down and she was no longer "starving", then I gave her the sippy, held it over her mouth (she was laying back in my arms) and squeezed a few drops into her mouth. She then accepted it and drank it. We never had a problem again.
Expect a battle the first time, but do not give in! If you have to drip it into her mouth for 30 minuets to be sure she'll get fluids, do it. Don't go back to bottles ever. She'll know you're a cop out and will refuse to take a sippy. I've seen lots of grown kids with bottles because the parents couldn't deal with the battle. This is part of parenting and child training. They need to learn that you're the mom and know what's best for them. Stick to your guns, stay strong, and your daughter will get it.
Remind yourself (as she's battling you), that she is frustrated and you staying calm will help her to calm down sooner. Its a mental game and you just need to prepare yourself before you start and during it. Don't get angry or frustrated. Knowing its a struggle before you start can help you not feel so out of control. Its all part of the process. She will respect you for your calm strength, and this will apply to many other parenting battles you'll have in the future, so don't cave in. Its important in many ways. (Think ahead to things like potty training, naps, obeying, temper tantrums, etc...) What she learns from you now is that throwing a fit doesn't frazzle mom, she stays calm and sticks to the rules. Its worthless to fight about it.
Best wishes. I know its not easy, but you can do it! (You BOTH can!)