I think it's great that she is able to see you but I think her wording could have been more gracious. The phrase 'you are just lucky that -' seems harsh to me, no matter what the context. The same with 'lucky for you - '. When someone is in a difficult space they don't need to be told they are 'lucky' - for ANYTHING.

Anyway - well done for accepting, and perhaps you could bring up the question of language and the way things are formulated...