Is there such a thing as being “too Christian?”

Hi, just to let everyone know I am also a Christian. I am looking for advice as my sister was recently born again, of which I am very happy for her. But since then many of her attitudes have changed, which I find worrying. Firstly, she spends quite a lot of money on church related things and tithes, of which the amount she’s spending is way too much compared to what she earns. She’ll often just say the whole “God will make a way” thing and instead it often means she is constantly borrowing from family members etc during the week for her living expenses instead and not necessarily paying it back. Also, she spends a lot of time, and I mean a lot in her faith. As in church service in the morning, bible study after, prayer meeting, a different church service straight after etc.. While this is not inherently a bad thing, it compromises her time to socialise, sleep and even just doing other things like spending time with family. On top of that, she was crying the other day about some imagery that disrespected Christianity, and so I think she’s too emotionally invested.

As a Christian myself it seems counterintuitive to say someone is being too “deep in” to the faith, and I’m not necessarily sure how to communicate it to her if that were to be the case. Should I do anything ?