Yes, it is okay. The fact that you are bringing this question to Him, rather than turning away in silence, is itself a sign that your relationship with Him is still alive and real.
The Catechism speaks of hope as "the confident expectation of divine blessing and the beatific vision of God; it is also the fear of offending God's love and of incurring punishment" [1]. That phrase — *the fear of offending God’s love* — suggests that true faith is not a numbness to pain or a prohibition on difficult feelings, but rather a deep, living bond where even our struggle matters to Him. When we fear hurting that relationship, it is because the relationship is precious. Your anger does not cancel that bond; it arises from within it.
Scripture itself is filled with the voices of those who cried out to God in anguish, confusion, and even protest. They did not hide their hearts from Him; they laid their rawest emotions before Him as prayer. The Living God, who "intervenes in history" and is not like the silent idols that "have mouths but do not speak" [4], is One who can receive your honesty. He is not fragile, and He is not distant from the reality of your pain.
Perhaps what you are feeling is not a failure of faith, but a part of its difficult, honest training. God knows your heart completely, and He would rather have your real, unvarnished presence than a polished pretense of peace. He is big enough to hold your anger, and faithful enough to stay with you in it.