I am having a very, very, small snicker while reading this as I'm sure I will be the one posting this thread in about 8+years time so I better be careful

As a user of a hair straightener, its very hard to be critical but using it multiple times a day is a bit weird. Once should be enough. I use mine every 2nd day. Maybe she needs a product to put in her hair before using it, to keep it straighter for longer IYKWIM? Or you could take her down to the hairdresser and get them to tell her what can happen with too much use. Maybe ring them first and word them up so they can make it sound worse!!!! She may listen to a professional - because really what do mum's know!

Keep the strength Bath and enjoy that glass of Chardy!