Does the Fourth Amendment authorize the use of deadly force against a citizen exercising her Second Amendment right to wear a holstered, licensed handgun inside her own home?

QUESTIONS PRESENTED 1. Does the Fourth Amendment authorize a police officer to use deadly force against a citizen exercising her Second Amendment right to wear a holstered, licensed handgun inside her own home when it is undisputed that the gun never left its holster and there is a factual dispute as to whether she reached for it when the officer unexpectedly entered her bedroom in response to a 911 ambulance call? 2. Does the Fourth Amendment authorize the use of deadly force against someone in mere possession of a handgun which is holstered and has not yet been drawn, raised, or brandished in a threatening manner? 3. Does 28 U.S.C. §1367 require a district court to weigh the factors set forth in United Mine Workers of Am. v. Gibbs, 383 U.S. 715 (1966) — and to articulate the process by which it weighed such factors — in exercising discretion to retain supplemental jurisdiction over state law claims after all federal claims have been dismissed when there are substantive differences between state and federal law, and the interests of federalism dictate that state courts be the ultimate arbiter of state law questions?