A.S.
While I don't think that it's right to have a child sleeping in the same bed with mom and bf (especially naked), my family is open with bathroom needs and nudity. I'm not talking about my stepdad or my husband (stepdad to my daughter)... I'm talking about when I was growing up, it was nothing to have my mom walk in the bathroom while I was on the toilet or in the shower. Or while I was showering, my uncle (grew up like brother & sister - he's only 8yrs older than me) would use the toilet or brush his teeth.
When it comes to showering, I know my 7yr old daughter still needs help. She doesn't clean herself well enough (she's gotten infections from not cleaning properly no matter how many times I have shown her) and I know at her dad's house, her stepmom is not comfortable helping her, so her dad does. Believe it or not, I trust my ex to keep her safe and I know he'd never do anything to harm her.
BUT.... Leaving a 6yr old alone for any length of time or leaving him with someone that doesn't even speak english is cooky to say the least. And as far as the playing baby is concerned, it can be a thought up on their own concept. I did similar and was never abused, never was abandoned, was checked on frequently, and caught with the neighbor boy in a bed naked playing 'mom and dad'. Now... I was brought up to think that it was normal for mom and dad to sleep naked. Not that I EVER slept in their bed with them... I didn't... Not once. But I knew that's how they slept. The neighbor boy and I never touched each other, though I did put a diaper on him once. : )
I would be more worried about neglect and abandoning than the naked playing baby scenario.
Also, I wouldn't have an issue bringing up things myself with the mother. I've been on both sides of the fence. Stepmom scenario asking why a 6yr old boy didn't want to go back to his mothers house and the mom talking with the stepmother about things at their house and why my daughter doesn't want to be there as often as she is.