W.L.
Have daddy keep trying and you should walk away. If you start taking over she will only ever want you. This is the time period babies start to get fussy. Its okay if she does not go down in four minutes with him. She probably spends most of her time with you and is most use to you. I purposly make my husband bath my daughter and put her to sleep every night. I am with her all day and that is there special time together. Hope this helps.