YOU SAID:

i talked with her then be happy

INTO JAPANESE

私は彼女と話をして、幸せになれる

BACK INTO ENGLISH

I will be happy to talk to her

INTO JAPANESE

私は彼女と話すことができます

BACK INTO ENGLISH

I can talk to her

INTO JAPANESE

私は彼女に話すことができます

BACK INTO ENGLISH

I can tell her

INTO JAPANESE

私は彼女に話すことができます

BACK INTO ENGLISH

I can tell her