My Mom's Funeral Expenses

My Mom died unexpectly Sunday night. She went into the emergency room around 8:45 and they said she had died at 10:12 from a heart attack. She went in complain ing of her back hurting earlier in the day (11 am)and they released her fromthe ER then. I have been going thru paperwork and it appears she had no life insurance.
My Dad had died back in 1989. I have gotten together part of the money together her to bury her, but like everything else Funeral home wants all up front. I wouldgreatly appreciate any help I can get. Right now services are scheduled for Friday.