**DESPERATE** How can I get my pug to cooperate with nail trimming?

I have an 8 year old pug who will not allow us to clip her nails. She yelps, screams, wiggles, thrashes and is impossible to restrain(even by 2 adult men). We have had her since a puppy and it has been an escalating problem over time. We have tried to alter her bad habit by handling her paws daily, talking to her, toweling her, and giving her treats while trimming. For several years we were able to get the groomer to do it, but now they have to turn us away because they cannot trim her nails. We have tried oral sedative recommended by vet (I believe it was bendadryl). Even our vet has problems. They past two trims she required doggy equivalent of laughing gas.. and the last time they could only get her front nails. I do not think that putting her under general anesthesia is financially feasible OR heatlhy so I am desperate for any suggestions.