@shinebykatjames There's a high probability she's been putting her mascara on wrong for years. According to pro makeup artist mascara tips, when she gets a new mascara, she should almost pull it out and bend the wand. This creates an angled brush, making it much easier to apply mascara.
To apply, she should do her lashes on one side just like this. Before moving to the other side, she should flip the brush so the little corner is pointing inwards on both eyes. This technique makes her mascara go on with much more precision and smoothness. Bending and flipping the wrist is mascara tip 101. She should try it out and see the difference.