Hello everyone!
I'm so sorry I haven't been able to come back earlier and update. I had meetings all day yesterday and then my DS was taken ill yesterday evening and so I spent most of last night at A&E with him. He's fine, just a stomach bug apparently.
Also, no smartphone so had to wait until I was back at the PC to come on MN!
Right, so to update! The term is certainly over next week but these classes continue throughout the summer, although at a reduced rate, because these are MA classes and the year ends in September not June as it does for undergraduates.
So, HR have been in touch with me and have been quite useful actually. They have pointed me in the direction of a room which she's able to use which has an armchair, a TV, a fridge and some old books left over from the last occupant (used to be an office).
In terms of addressing the issue to the student herself, HR are a bit unsure but are adamant that it's not my job and should be taken on by HoD (fat chance). I was advised to first of all address my concerns about the noise in the group work and ask that she doesn't express during classroom work of any kind because of disruption of the noise to other students. Fair enough.
Far less clear is the general feeling of unease that other students have. As others have suggested, her expressing before and after class within eye sight of other students can't really be addressed as she isn't causing public indecency by exposing her breasts (whole other issue, please don't get me started) and she isn't disrupting class time.
So, the next step for me is to meet with this student and let her know that expressing during any class activities should stop but she's free to leave the room for a bit if necessary (although I don't want to push this too far) and she's welcome to use the spare ex-office before and after class if she needs more privacy.
I guess I'm just apprehensive because I have left it so long to talk with her about this. I should have said something in the first couple of weeks of teaching but I'm a junior lecturer and I don't find confrontations (wrong word but you know what I mean) with students easy, especially in situations like this when she's not done anyting 'wrong'.
Thanks so much for all of your comments and support 