How lovely to hear that your daughter is over with us to study!
You haven't mentioned which university but have you/she tried asking their accommodation services for advice and possible accommodation?DAFT.ie
would be a place to check out accommodation for the longer term than just tourism. I have pre-selected County Kildare and student accommodation to get you started but feel free to change this to suit. Rent.ie
would be another place to try, as well as Rentola.ie
and also Dorms.com
As the student year starts to approach, may places will be taken already but you could try some community pages such as NaasTown.com
Hopefully, this will give her some more suggestions.