PLEASEHelp save May and her baby!!

I found May in October last year, she was hiding in an abandoned guesthouse, terrified, starving to death and had just given birth to a litter of puppies. She was in such bad condition her fur had fallen out and you could see every bone in her body. I started leaving her water, fish and rice and coconut juice/ pulp..and just sit near her sometimes she would bark and growl at me and other times she would whimper and cry. 8 months later, she is the healthiest, sweetest, most affectionate dog ever! She had 6 puppies we kept one and named him Shambles, he is a happy, healthy 7 month old puppy. I was always planning on bringing the dogs back to England but the costs are mounting up so quickly! I can't bring myself to leave these beautiful dogs on the streets, the life of a Cambodian street dog is rough!! May is still afraid of sticks and people, she won't play fetch or chase because she's been beaten. The amount of dogs that get killed daily is so high, if it's not other dog attacks, it's being hit by a motorcycle, or dehydrating in the baking hot sun. Worst case scenario is that they get eaten or skinned alive by the locals. Please help me get May and her baby back to England where they can be looked after as pets, here when I take my dogs for a walk people point and shout " BBQ at them! I can't bring myself to leave them in this country, but I'm a traveler, I came away over a year ago with only 2 months wages and I need help to get my fur babies home! They've had their jabs and are in good health but there's so many hidden charges to get them to England. Please help me!!