It's probably in her best interest to start doing more risque scenes. She's in her prime, her body looks great (maybe a little too thin now but to each his own) and she inherited her mother's assets. She should really make the most of it while she can before she's passed over for the next actress who's more open to nudity.
I really dislike actors who pretend to understand the art of acting but yet shrink away from their duties when they're expected to do nude scenes. If your job is to portray a character who freely has sex or gets naked then why exactly does your character cover up their tits, bare ass or pussy whenever they have sex?
That shit takes always takes you out of the scene because it's less realistic. If these 'actors/actresses' don't want to portray the character as they should be then find someone else who will actually give it their all.