<human>: Give me a shortened version of the text

Example 1: we travel often and she uses her cellphone as she goes and refuses to just opt for a package that would save her literally hundreds of dollars. I've told her several times now and even offer to do it for her but yet she continues to ignore what in my opinion is a common sense logical money saving decision. 

She gets mad because I keep bringing it up and she says I keep lecturing her over it. 

I admit I feel like I am lecturing her and I wish I don't have to be but I just wants what is best for her and potentially us in the future. It frustrates me a lot and she gets very upset with me about it that it's a touchy topic.
<bot>: Gf won't subscribe to cellphone plan when on vacation and thus incurs hundreds of extra dollars in fees and gets mad at me and says I lecture her all the time. I just want to save money or not throw it away.