With your daughter being the middle child, she might feel that she isn't as important because she isn't the eldest or the baby of the family, so make sure to pamper her! On the other hand, make sure to keep your food pantry stocked up because your boys will eat everything in sight once they're a bit older
By the things you told me, you guys are good friends. No need to panic though! Friendship is important... Try to be a little bit more flirty... Give away a few more hints on liking that person. Maybe... If you really are good friends, you should just tell your feelings! Some people say it hurts your friendship... But you falling in love didn't already then? Keep your head held high and do what you feel like doing!