Reply To: How do you tell a good friend you no longer want to eat at their home?

If the only problem is the warming up of food, you could go and not eat the “warm food” only challa and salads etc then go home and eat thesnitzil you warmed up for yourself.

Not easy but better than insulting someone.

Also IMHO someone who grow up conservative is harder to “retrain” vis a via HAlacha