My (25 M) girlfriend (21F) has been upset recently (I've listed the reasons below) and I thought it would be a good idea to put her problems into perspective by saying I'd break up with her (showing how relatively insignificant they are by comparison to a "serious" issue). She called me an idiot for about half an hour and cried a little as we cuddled. I genuinely thought it would help! AITA?

Context:

She's moved to the UK from the Czech Republic to study this September and has been stressed about her new job, Brexit, funding, leaving her dog etc.