Your granddaughter is so lucky! :)
If you have not yet decided on when to come, I will advise you to maybe check the dates of some of the Music festivals.
There are few during the summer including the Fleadh Cheoil. This festival is an all Ireland music festival which is generally mid/end August. Not sure where it will be next year but during this festival, the town becomes a stage for anyone who wants to play!
Ciaran did list as well some pubs on this thread
last year, have you read it?
About tours, I do not know much but I saw some tour companies in this community, they should be able to help you!
Good luck with the planning!