A few things pop into mind you could check. You mentioned she drained the bottle you offered twice. She could be having a growth spurt or she could be thirsty. How is her solids intake? You could try offering another small bottle somewhere in the day, maybe after the pm nap to see if that makes a difference. Or, offer her water in a sippy and leave it for her in a corner of the crib, if you think it might be thirst. Is she hot/cold?
It might not be teeth, but if she's got 8 already, she's obviously an early teether, so I wouldn't rule that out. Can you see back to her molars at all? Have you tried pain meds just to see if they make a difference? The crawling could definitely be the culprit. Developmental milestones like that can really interfere with some LOs sleep.
Is she an independent sleeper? You mentioned she used to have a dummy replug. Are you still using the dummy? Any signs of SA at all? She's at the right age for it and since she gets upset when you lay her back down, that might be a factor. What would happen if you just went in and laid her down and gently tell her to go back to sleep? Sometimes it's harder to get them back in the crib after you pick them up.
Finally, you're routine looks fine for 9mo, she doesn't seem to be getting too much day sleep. But, wakings like that can be UT, so it might be worth pushing out her morning nap a bit until you get closer to 3.5hr A.
There's a lot that can be going on, I guess.
. Anything jump out at you?
