Study Abroad - Cork with dependents

Starting January 2015 my boyfriend is studying abroad at UCC for the Spring. We currently live together and have a 2 year old daughter. His program gives him the option to take dependents and/or companions. He has proper paperwork to show that he has been accepted to attend UCC and although he put our daughter and I as dependents it doesn't state our names. We booked our round trip tickets before they are overly expensive, but now I'm worried we won't be allowed to stay for more than the 90 days given to tourists because we don't have visas. He needs to register with the local police wishing a month of arrival but I have no idea if this include our daughter and I as well. We've been told by the Irish Consulate that a roundtrip ticket proving we do not intend to stay will be sufficient when entering the country, but I've read different everywhere else. Does anybody have a similar story or know of anything that would be of help?