I'd have thought, if she is in residence, that the uni will have wi-fi available to the students, so she wouldn't need a dongle as pretty well all laptops now have wi-fi built in.
My daughter started uni last year, and it took about 5 minutes to get her laptop registered to us the wi-fi there. All the rooms in residence had their own phones, so she used to call us on her mobile, and we would call her back on her room phone (BT deal gives us an hour at a time for no charge .. if the call was going to be longer than that we'd just hang up and call again).
Friends of hers were not in residence, but did use Virgin where they were staying, so again the connection was wi-fi and the people in the house shared the cost of the Virgin package.
For TV programmes, my daughter used the catch up services available on the main TV networks. She got to watch programmes she was interested in a bit later than broadcast, but she didn't have to pay for a TV licence.
It's probably worth asking the uni what facilities are available if she is in residence, if they haven't already given details in the stuff they send out to students.