I think consistency is key in these situations whether it's one on one, a hospital, clinic, or group situation, you all have to be on the same page with one another or else you're not doing the patient any favours. Thankfully I've never been hospitalised myself, but visiting at least one friend (we'll call her 'L''), with a disrupted attachment pattern, and suspected BPD, in hospital, and seeing the types of splitting behaviour that
@F0nzie and
@smalltownpsych have described, that was always the one feeling I came away with every time, like "wow, forget about being on the same page, none of you guys are even reading the same book", and in the meantime L would be acting out her defense mechanisms from one end of the ward to the other and getting nowhere fast. It was damn near the same script being played out every single time - L would hit one of her thrice or so yearly crisis points (bulimia plus severe self harming), agree to voluntarily enter a two week program to try and stabilise her eating and reduce/stop self harming, and no matter who was working what shift on the ward there always seemed to be a Nurse: 'Let's be friends' and a Nurse: 'Tough love' amongst them. Not surprisingly L would always immediately gravitate towards Nurse 'Let's be friends', because when you've been through a situation of abuse you do tend to want to immediately align yourself with the one person in the room you think is going to do you the least harm - and Nurse 'Let's be friends' would end up being the idealised object on the ward for a while, because she was the one who was perceived to 'really get it', and didn't make L feel threatened (even going as far as to align herself with L against Nurse 'Tough love' by quietly disparaging Nurse 'Tough love' behind her back, and telling L things like "I don't even know why *she* bothered going into a caring profession if she's not going to care"). Now fast forward a few more days and invariably Nurse 'Let's be friends', in her apparent zeal to align herself with the patient by trying to be their newest BFF, would slip up and do something to shatter L's idealisation of her (usually by doing something like making what they thought was a light hearted joke to a bulimic along the lines of how they needed to 'start getting ready for bikini season' and *giggle, giggle* 'so tell me what the secret is'), and all of a sudden Nurse 'Let's be friends' would go from idealised to threatening object, and Nurse 'Tough love' would take over the idealised object role (because now they were the one who was seen as being 'right all along', and all Nurse 'Let's be friends' had done is wasted valueable time by not having the guts to challenge L when that's what she *really* needed). So now watch the roles switch when Nurse 'Let's be friends' starts to resent the way this patient has turned on her, after 'all she's tried to do', so she ends up taking on the role of Nurse 'Tough love', and in the meantime Nurse 'Tough love' is gloating to herself, because of course they knew all along that you have to be tough with these patients and not let them walk all over you, and 'look, now see, I'm the one who's finally gotten through to the patient' and suddenly Nurse 'Tough love' would find themselves cast into the same role as Nurse 'Let's be friends' by a patient who was basically acting out defense mechanisms learned from prior abuse situations - except of course now in L's desire to align themselves with the person they thought would be the least likely to hurt, or abandon them they would start internalising Nurse 'Tough love's' attitude towards patients to an extreme degree and start not only talking about how she needed to 'toughen up' and 'get honest with herself', but also denigrating herself as 'ungrateful' and 'unworthy' and 'insert more self defeating negativism'). The entire end result of this being L would come out of hospital worse than what she went in; behaviour wise she might have been stable for a while, but emotionally she'd be a complete mess and then the entire cycle would just end up repeating itself the next time she crashed and burned and ended up back in yet another crisis state.
Footnote: L did finally get herself into a good treatment program, one where the staff were on the same page and she got the same balanced and empathetic response from everyone (and any ruptures that occurred were dealt with quickly and appropriately), and she's doing really well now - well enough to have completed a masters in counselling and now be working as a youth counsellor for a government funded agency.