As far as the miles go, liquidate them. Take a FC dream trip with someone special(not a girlfriend you never know how long she'll be around) like your mom, dad, brother, etc.

In your case 600k should get you two dream vacations. Get the account down to less than 45k so she doesn't even get a FC flight anywhere.

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God Bless America West and British Airways

HP - Platinum/800k miles
BA - Dirt/Soon to be Silver
UA - Dirt/19k miles
AA - Dirt/Only using to get BA Tier points/miles.