Benefits for my carer?

Hey there, I’ve PD and receive PIP. My wife is my carer and she receives carer allowance. Are there any other benefits she can claim as she can’t work due to caring for me? She also as MS but doesn’t receive PIP as its the relapsing-remitting kind.

Also what happens to National Insurance payments when receiving PIP and Carer’s Allowance. Should we still be paying it?