Hi , My Sister Has Been Diagnosed With RBBB One

Hi , My sister has been diagnosed with RBBB one week back. She has no other symptoms. The cardiologist didn't proceed with further tests saying it's an isolated event and her heart is healthy. All her blood reports came out normal. The thing is we are hosting this weekend and she wanted to drink some alcoholic beverages . I was worried it might be a bad idea. Is it okay to consume alcohol at the moment