I know that UL sends Civ Eng graduates to the University of Dundee to complete their degrees.
3 Years in UL Engineering and I have never heard of Civ Eng? You might be thinking of the Erasmus programme in relation to Dundee.
For the OP, your daughter was offered her second choice on the CAO, If she does not accept this she will not be offered any other courses below her second choice in the second round offers, i.e. she will be offered her first choice if there are places left in the second round.
What is the course? If the first and second choice are similiar courses:
a) in the same uni and
b) run by the same department/college within that uni, then she may be able to transfer during or after her first year. Ring the faculty concerned but I would say that it would be no problem.
If you do a diploma/degree in an IT she should be able to transfer after the first year, if it is a similiar course. However, she must offered the course on the CAO form.
She can wait for the third round and see if there is a place on the course, however if she accepted her second choice she would be offered a place in the second round.
Or she can accept her second choice, get alright to good results, transfer to the first year of her wanted course but of course she will have to pay the full fees.
Hope this helps...