N.P.
My husband travels often. He is gone about 14 days a month..sometimes less. The key is to have them spend one on one time together and then prepare her for his absence days before he leaves. My husband will pick her up earlier at daycare and they will go to the Barnes n Noble or some special outing. He also has a routine with our daughter every night. He sings her the same song every evening and when he is not home he calls in and I put him on speaker and he sings to her.
Every child is different but I find that if you explain to her when he is leaving ....what he will be doing on his trip and that daddy is going to bring her back a special gift from his travels....I guarantee she will be ok with him leaving. My husband always brings her back a trinket....a t-shirt...a magnet etc.
Good luck,