Perhaps the issue was not that she saw you as saying she was a failure as a beautician (even if that is what she told you), but perhaps it was that she felt like you "hit her up" to try to sell her on your product/opportunity. You probably know this, but there are a lot of sales reps who see someone mention something that the rep's product can solve... and it is like the proverbial blood in the water to a shark.
I've seen this so many times on Facebook - someone mentions that they are trying to lose weight by eating more healthily, and all the weight loss company reps come out and start commenting about how the person should try their product.
Another person might talk about migraines, and the essential oils people flood the thread to talk about their oil company. It leaves a bad taste in people's mouth and makes these direct selling and network marketing companies look bad, because their reps are just waiting on an opportunity to sell, sell, sell. I've even seen people post about weight loss and say outright that they don't want anyone commenting about their company's products and yet, there are always many reps who jump in trying to make a sale.
So maybe take that as food for thought next time. Certain industries get bombarded with sales pitches, and the haircare industry is one of those. And this applies even if you're not in direct sales or network marketing.