Was I wrong for trying to let my INC friend know the truth?

Hi, to give you some background, I'm a Filipino and I have a friend who is a believer of Iglesia ni Cristo (Church of Christ). We're classmates and she mentioned that I "disrespected her ever since we met". She then cried, I was forced to say sorry.

I was just calmly asking questions about her beliefs and giving her bible verses that contradict those beliefs.

Was I wrong for showing her the truth?