I also earlier informed you that at least some Flight IIAs (if not all of them) will gradually be getting SPY-6, replacing their SPY-1. It won't happen overnight. The articles which talk about this indicate it will be part of a mid-life upgrade to whichever ships get it. It will happen during their regular scheduled mid-life upgrades.
Yes, she got SeaRAM. As far as Rota ships having SeaRAM...this is the explanation:
Unless/until AEIGIS Baseline 10 gets installed (with the SPY-6 upgrade) Baseline 9 AEGIS ships must either be in "ballistic missile defense" mode, or "regular air defense" mode. To switch from one to the other requires shutting down the one software system, then booting up the other. So, the Rota ships--which have a primary anti-ballistic missile role--are not in anti-air mode, and are vulnerable, since the shutdown/reboot takes some time. So, SeaRAM is installed to provide some sort of instant anti-air defense when/if needed. As you note, SeaRAM has its own radar...it is "self sufficient"...independent of the ship's fire control systems.
When/if AEGIS Baseline 10--and SPY-6--come, that system can simultaneously do both ballistic missile and "ordinary" AA/anti-cruise missile defense, etc. allowing the ship's fire control to direct all the ships weapon systems "in unison," against multiple types of threats.