Greatbluehopefuls nest box 2019 & 2020 - Kildare,Ireland

Quite a predicament GBH but my thought would be the same as Ann’s.  I would get in touch with the RSPCA or PDSA, they would take in the cat/cats and check them over and assess their suitability for rehoming them in the future.(obviously the best option for them).  This way you would have done your best by them and have a clear conscience.  Good luck 
Sue