You meet a girl. Make a date with her that you'll go grocery shopping with her and pay for the food if she'll cook dinner for you at her house, because you want "real" Dominican cooking. It will run you maybe 1000 pesos for groceries. Check out her house and her kids and stay the hell out of the kitchen while she cooks. The kids go to bed with full stomachs. That is one of the most powerful aphrodisiacs for a Dominican woman. If she's living beyond her means or wants way more groceries than needed, enjoy the night and move on.
While the leftovers are saved for the father of the children? No thanks.
There are easier ways to hook up with a non-puta than paying for stuff for people you have no business taking care of even in the most meager of ways.
Besides, if you come out like that the first time it will be expected of you EVERY time. Sets a terrible precedent, imo.
As for the OP, this story has played itself out over the years on DR1 ad nauseum, and the longer-term members of the site are just too jaded to offer anything but insults or the same advice over and over again which, quite frankly, always goes in one ear and out the other.
Me personally I'm not into "testing" anyone to gauge their authenticity. I already know that when dating someone of humble means they are going to ask for money because quite frankly, who else are they going to ask? From their perspective if a turista is not willing to send them money and buy them expensive phones or whatever, then they don't see the point in messing with one. You can't really blame them.
This evolves from not understanding poverty culture, and it's not solely relegated to Dominicans, even though they do add their own unique twist to the situation with the constant lying, lies that never deviate from the playbook from east to west, north to south of the island.
Even if you do support them, what are you paying for? Fidelity? That's the fatal flaw in the transaction. The other flaw is in thinking that if you send money it will make these women that much happier to see you when you DO roll around in person. There's no money in the world you can pay that will buy a sincere reaction to your presence. Especially from a moody, jaded, anemic Dominicana who's just looking for a gringo pendejo sugar daddy.