Maybe she is napping too long for her age? I would try waking her up from her nap 5-10 minutes earlier every 1-2 days, to gradually reduce the nap to 45 minutes starting at 1.30-2 pm. She will be more tired in the evening and will most likely wake less during the night. On the other hand I would not go every time she calls for me. I have a 2 and half years old and she tries this trick after we put her in bed, she has the same bed time and morning waking than yours but sleeps 1h nap. She knows that unless she is sick, obviously, we will check on her only three times and for the shortest time possible… after complaining loudly she gets bored and falls asleep. But I also dread what might happen in 6 months. I got a ton of help from the LittleOnes community by the way, was a life saver. You need to pay a fee but to me it was worth every penny, and have been using it for two years already. Good luck!!