It seems she has not ruled directly regarding the 2A. This is from Wikipedia:
F
Second Amendment
Kanter v. Barr, 919 F.3d 437 (7th Cir. 2019).[57] Barrett wrote a lengthy dissent in favor of gun-ownership rights. The plaintiff was convicted of mail fraud for submitting bills to Medicare for reimbursement for non-compliant therapeutic shoe inserts. Due to his felony conviction, he was not allowed to legally possess a firearm. He challenged this denial and the majority upheld the felony dispossession statutes as "substantially related to an important government interest in preventing gun violence."[57] Barrett dissented, stating that while the government has a legitimate interest in denying gun possession to felons convicted of violent crimes, there is no evidence that denying guns to non-violent felons promotes this interest, and that denying such rights is a violation of the second amendment.[58][59] Highlighting Barrett’s historical and originalist approach, the National Review lauded Barrett’s “impressive” Kanter dissent.[60]
