Thanks ladies!
Emma, right now a normal night is bedtime around 8-8:30 with a bf beforehand, then up and bf around 1-2 and up again around 6am, where I usually nurse her and pray she'll go back to sleep for another hour or so, which doesn't always happen

(although it did today, which is why I'm on here now!) She went through a phase not too long ago where she was waking around midnight and again around 3:00, so I would get her out of bed and go downstairs to the couch the first time, but not feed her, and then feed her at 3:00 when she woke again, but thankfully we got over that cycle with a combination of patience and w2s. We were just on vacation, and she slept horribly, but we were in a hotel, so whenever she woke at night, I just picked her up and cuddled her until she fell asleep, then laid her back in the bed. We're back to our normal sleeping patterns again, though, which is why I'm ready to conquer this last waking.
My thoughts right now, after hearing your advice, are that it will probably be best to continue to get her out of bed, but not feed her (unfortunately dh is no help here because he can't function without enough sleep and has to get up at 5am, so I'm on my own, but I'm used to it) and then gradually transition to other methods. My other concern is that she shares a room with her two older sisters, and they're pretty deep sleepers, but I really don't want to end up with two or three kids awake in the middle of the night, so taking the crying downstairs is probably the best choice right now.
Thanks both of you for your input! I'm going to start tonight, so I'll let you know how it goes. I've been putting this off for ages because of teething, or visitors, or trips, but I've had enough. Wish me luck!