It's so lovely to hear that you're looking to reconnect with your family! I'd be absolutely delighted to lend a helping hand.
Is it safe to say that your mum was born here in Ireland? If so, there may be a number of resources to help in your search. For example, if your mum was born in the Republic of Ireland after 1921, I'd suggest contacting the General Register Office of Ireland (GRO)
for help finding more information.
There's also a helpful guide
on how to track down genealogy right here on our community. This may help get you started with tracking down where exactly your family is now so that you can reach out.
If you'd like to share just a wee bit more about your family, I might be able to offer more advice.
I look forward to hearing back from you and wish you the best of luck in your search!