I have a girl who we meet at acertain congregation.I did not offer words to her but she sends me a lot of love sms and forces me to send her e-mail messages.Should I follow what this girl wants or not?

No. Be assertive. Do not let anyone walk over you. This woman is already showing controlling traits by forcing you to send her emails. Confront her, and tell her to stop.

You can send them if you don't mind and if you interested in her. If you love the girl the go with the follow, she might be a nice partner , give her a try

Nobody else should try to force you into doing something you don't want to do.
Tell her to stop and block her on your email,phone etc.

Your situation is too complex for three sentences to give an accurate description. People can only answer according to their own biases. Please explain further. How did you meet? How much does she know about you? What do you feel for her? Are you just afraid of her control or do you feel pressured? If she sends you SMs turn off your phone and think for yourself how you feel and what you want.

And strangers on the internet might be able to help you figure out facts about your situation that you didn't think of on your own, but nobody can ever help you make a choice, so you might want to rephrase your question.

I don't understand "forces me to send her e-mail messages". That makes no sense. Do you have an interest in her, or not?