Should I have sent money to two different girls on twitter?
That depends. How long have you known them?
I only knew one of them for a few months, but I've known the second one for a few years
Sending money to strangers on twitter is very risky. You never know if it is going to be a scam or if the people are actually legitimate.
I am not trying to get anything out of them. I was trying to help them when they said they were in trouble.
Your intent seems great, as you just want to help. Just be careful because it would stink to send this money to someone who doesn't actually need help. In this case, your money is just being wasted.