C.M.
I was thinking about this exact thing this morning! My daughter used to do the same thing. My son wakes up super happy every morning and hardly ever cries. He sleeps better (and naps better) than she did so maybe sleep has something to do with it? My daughter wakes up very happy now (but she's usually in bed with us) so maybe that makes all the difference.
I suggest getting her bottle before you go to her. If she's crying, what does an extra 30 seconds difference make? I'd make up the bottle at night then pop the top off and put it in the microwave for 30 secs.
Good luck!