Hi
My LO has reflux and when younger had colic so night time was often very unsettled too. Have you tried tilting her Moses basket a bit? If she has silent reflux and / or trapped wind it can help to slightly elevate her so can try putting a few books under the head end of her Moses basket or folded towel under her mattress so she is slightly elevated head and shoulders higher than feet (if you see what I mean).
The other thing my HV told me was to keep her upright for 20 mins after every feed to help with reflux! I know this sounds like the last thing you want to do in the middle of the night when she fallen asleep and you're shattered but it really did help her. With my baby I would cuddle her upright against me sitting up in bed and 9/10 times she'd stay asleep. It was exhausting and I would really struggle to stay awake but it did give her a much better sleep over all as she wasn't throwing up nearly as much (so I could visibly see it was working).
If she is more comfortable with her silent reflux and possible trapped wind she will hopefully be more settled over all... And don't worry it won't last forever, after a few months she didn't need keeping upright any more (but still needs lots of winding but hopefully Willow may be better with her wind).
Hope you find something that works