She can afford to vote for it as it's a 'dead rubber' in the House anyway. Dems will vote to impeach and they have the majority.
The real test will be in the Senate where 2/3s majority needs to vote to "convict" Trump of his impeachment.
I think they need about 7 Republicans to vote for this conviction, along with all the Dems.
Mitch seems to be in support, and Mitt Romney certainly will. So they need 5 more spines grown between them...