Answer:
They were disowned and burned off the family tapestry (by her family whom resided in 12 Grimmauld Place)
Step-by-step explanation:
Since Ted Tonks was a muggle-born the Black household disowned her.
Another fact- free of charge:
Her husband was murdered by Snatchers, bounty hunters brought together by Voldemort to arrest Muggle-borns. During the Battle of Hogwarts, her daughter Nymphadora was also killed. This is quite an unfortunate lady.
hope this helps:)