I think once Natalie realizes she's still loved, she'll be fine

I don't think that lemon juice would be a problem.
I know that Abyss used DeLimonene, an orange oil or orange turpentine to thin one part silicone to make a sealer when they made their dolls with tin cure silicone.
Technically, silicone is porous, just not nearly so much as TPE. I think that with time, the musty odor will eventually off gas out and fade.
Years ago I took Sandy out into my "toy shop" with me to keep me company while I ran a few antique engines. When I brought her back in the house, she smelled of exhaust. It was pretty bad too, but after a few days, that odor faded.