Giving more vs receiving less

Hey Hello everyone,
Lately I started to be more upset because on thing going on in my relationship. Me with my GF have different libido levels (me 9.5/10 and her 6.5/10). We openly talked about this and she said she will try to be more understanding. But it has been 3 days since we last were intimate. I am doing everything correct and did not make her upset these past 3 days. I am cooking, cleaning our placel even leting her speak 5 hours on the phone with her friends, as she needs that. At the end of the day, when I have been waiting for this very moment to be closer to her body, she just says she is tired. I try to turn her on and she denies everything. When I asked if she wants, she said she wants to sleep. After a pause she said that now she starts to feel guilty and I quickly said that she does not need to feel so (as I care about her feelings).
Am I doing smth wrong and need to push more/less? Or is this how we are made and I just need to suffer or be patient and kill my desires?