[takinola]

I understand how you feel but you should realize that this point of view is wrong-headed. Her, or anyone else's, success has zero impact on you so there is no justification to feel bad about their achievements being "undeserved".

By the way, it is often really hard to see just how much other people put into their projects and so from the outside their success does not seem very justified (hence the phenomena of ten year overnight success). I find myself making this mistake as well, but it is useful to remind yourself that it is the wrong way to think.