The The Doctor takes Rose to see her deceased father Pete Tyler. She wants to be there for him in his final moments. She saves him instead almost the destroying the universe. Pete uses those Tyler brain cells to save his family and Rose is there at the end.
The Doctor takes Charley to Singapore so she can meet her gentlemen friend. Then in oh so Doctor and Charley fashion they end up bouncing around time to deal her date's granddad and those horned wonders the Nimon, performance artist space villians.