Yes I agree @PinkFlloyd for seminars she should be emailing her seminar tutor when she cannot attend, asking for the work to catch up etc. Her subject is likely more lectures so she should be emailing lectures if she doesn't understand something. Lectures will be recorded so she can catch up easily. If she needs extended deadlines on reading or quizzes, she should contact the Disability liason officer (they are for temporary issues and long-term ones) or the Disability service directly if she doesn't know who the DLO is, they can then direct her to her department's DLO. Each department will have one themselves who is also an academic, links will be on the websites and introductory emails as well. Then can extend things for her so she has longer to do reading etc which she may need to do for a lecture next week - as she is catching up she can have longer.
Has she signed up to a new GP? If not she needs to do that today herself, the forms are online, you search the GP and then the NHS website link to register comes up. If she hasn't take her to a walk in centre like urgent care - if she has then get her to do the online form. She needs to be taking care of her conditions herself more, if she's going to move out and be an adult. That involves making sure she has a new GP, getting any meds for her heart condition and asthma, if they are getting worse going to the doctors herself, booking an appointment with the online form. She should be able to book an appointment if she's sick and go herself, it is a life skill to navigate appointments, communicate to doctors and health professionals yourself - advocate for yourself, go by yourself even if you are nervous, know all the different meds you are taking, tests you need, former results, NHS app etc. Granted she's just left and you can come, but you won't be able to and probably shouldn't come and every time, so she needs to start manging it herself. Having folders for emails, notifications, going through them etc. Finding things on the website etc.
Eventually you have to pull back and let her manage things, access the university support services if she doesn't know, go to the reception of her department, email her department's enquiries email - they will have shown it to her during intro week, she can check emails and find it as they likely have sent her stuff, then she can start a new email to them.
Or when she's better go to the reception herself, email her academic tutor as well regularly having a good relationship with them is key, they'll do references down the line and can signpost her to places.
I do hope she feels better soon, I'm sure its all a lot, so she'll be glad to see you.