friend dilemma

Nette • First timer
My close friend of over a decade had her baby one month after I had mine- she spent the day at my house yesterday and it was great- we reconnected and relaxed with our new babies. Well when she left- I sat in the chair where she spent most of her time and I started getting itchy and noticed tiny bites a short time later - she owns dogs. I don't. Well my husband came home and barefoot started feeling extreme itching and I think she brought FLEAS to my house! We sprinkled baking soda and salt Everywhere and are dealing with it But I don't know how to say anything to her about it. She is a Very sensitive person and she Will be hurt. Any advice???