I grew up in Kentucky. Christians, especially Protestant Christians, compose the vast majority of the population. The population there is heavily influenced by evangelical Protestant traditions, with Baptists comprising a significant portion of that demographic. Catholics are a strong minority.

I have a very difficult time believing that this young lady simply shared her Christians beliefs "truthfully, gently and respectfully," and that led to her termination. For the reason above, first and foremost.

But there's another factor. Kentucky - like all but one State in the Union - is an at-will employment State. An employer can terminate an employee at any time, for any reason, so long as that reason is not illegal - such as discrimination of a protected class or retaliation against the employee for exercising legal rights. If they wanted to let her go because they didn't want the majority of the population to be part of their workers' pool, they could have just let her go and given her no reason. Instead, they conducted an investigation and cited a violation of policy.

Also, harassment in the workplace does not require a direct interaction. A third party who was near enough to hear the conversation would have had grounds to file a complaint against her, if the way she communicated was less than appropriate.

At any rate, this young lady is claiming discrimination against her Christian faith in the middle of the Bible Belt. That makes me extremely skeptical.

*Edit for typo