There nothing left in there

I EPed for my daughter for 7 months due to my daughter never latching. I weaned from the pump and dried up my milk last week since I had a large enough freezer stash to get her to a year and now she is suddenly obsessed with my boobs and keeps sucking on my chest above my breasts. I keep asking her why she is interested now that there is nothing left in there, she had 7 months to decide she wanted them and she just smiles and giggles. Did this happen to anyone else?