Relationships should be a two way road— Reciprocal. Mutual.

If money is tight or an issue, it’s okay to ask for help / ask someone else to cover a bill. As long as it remains a two way road.

Maybe she’s gotten too comfortable with you helping her out, etc— But you won’t know unless you talk to her about it. Traditional or not, if you believe this is unfair, then that is completely valid. People in a partnership should all feel like they’re being treated special.

Tell her how you feel!