I have found that if you have the email addres to the cemetery you are looking in,they will do the look up for you. I couldnt find this particular cemeteries email,but I got a hold of their phone number and address. Try calling them,they should have info on your Aunt..
St Lawrence Cemetery
203-624-3980 Fax: 203-787-5698 280 Derby Ave, West Haven, CT 06516
If you need anymore help,please feel free to email me @ Tuesloveschet@aol.com