Since you are home with her all the time there is no time for her to miss you in order to have that same reaction or to get excited over your presence. I'm sure that it is a whole other story when you return home from the market or from running errands. I home with mine all day too and they rarely show any excitement except when I am laying on the floor with them having cuddle time. but you can bet when I walk through that door they are all over me.
Your pup will soon realize that you are someone she should be excited to see and want to be with because you are the one that fills her food bowel.
