Firstly nice lashes though I know they aren't the ones you're talking about.
My training advised me to always take before and after photographs, the client ticks a box on the consultation form to allow this and it's obviously always advisable to double check that the client is happy and clear that this will be done. The pictures are then attached to the consultation form so should there be any issues we can fall back on this.
I wouldn't get into anymore war of words with her. No more replies to text messages,nothing. Its not good for business or you. Sadly sometimes we get the odd awkward client. Luckily they are few and far between.
Hopefully she will back off now.