So allegedly baking a cake or providing flowers for a wedding between same-gender folks interferes with your relationshionship with JESUS?

Yes, people have the right to refuse to violate their faith. Same sex marriage is against the Bible. No one should be forced to participate in something that violate their religious convictions.

Should a Muslim caterer be expected to serve pork chops at an event?

I would more agree with you as far as a personal relationship with Jesus is concerned.  She probably felt that because The Bible does not recognize same-sex union as marriage that it would be wrong.  Which she is entitled to do.  As she is entitled to refuse to serve anyone if she wants to.

I do not personally recognize it as marriage either but doesn't mean I won't congratulate them or wish them well or give them a present or sell them a cake or flowers or whatever.  The Bible teaches me to love others as myself. Same sex activity is viewed as sinful in The Bible but so are many other things and which one of us is without sin?  I certainly would not advocate same-sex unions or preach them up as anything special but they exist and I can't pretend that they don't.