Nice sensible masturbation... 👿 It's just a shame that she only perceives the plastic panties as protection against wetness and therefore doesn't discover (so it seems) what a wonderful source of pleasure the soft, smooth but incredibly sweet, tickling and stimulating surfaces are - especially on wet genitals. You obviously have to make the mental leap from wetness protection to pleasure provider, which is actually already given by leaving the diapers off! Then you will be surprised with pure pleasure!