2na syadah mo2mnah I try to write the expression in Arab frank

There are many ways to say that: امرأة مؤمنة، قانتة، زاهدة، تقية، صالحة But the literal one for faithful is مؤمنة

مؤمنة you can say it when she beleives in God and fate very well أمينة if she is trustfull صالحة if she is good and do good things it depends on what is faithfull means in English , imean according to the phrase that "faithful" is mentioned in.

أنا إمرأة مؤمنة .. And in English Alpha-pet: Ana Emra'a Mou'mina __________________________ I will Learn Some Arabic Grammar of That sentence : I am .. Means : Ana Akoun Where I Means Ana and Am Means Akoun Woman Means Emra'a Faith Means Eman But if you want to give (Faith) returning to (Noun) You should say Faith Of and it means in arabic (mou'men) But Mou'men is a masculine, Then If You want return it to feminine, You should add sound (a) to (Mou'min) to be (Mou'mina). ____ So if you want to say I am a woman of faith It will be ana emra'a mou'mina or Ana Akoun Emra'a Mou'mina the Both of them is Right :)

I think you're confusing "faithful" with "of faith". "Faithful" is مخلصة Mokhlisah "Of faith" ---- if you mean that you believe in God, then you are مؤمنة/مؤمنة بالله Mo'mina/mo'mina billah