It’s not shock that she is willing to go against the rules:

With at least 50 percent of the Democratic Party’s 30-member Rules and Bylaws Committee committed to Clinton, her backers could — when the committee meets at the end of this month — try to ram through a decision to seat the disputed 210-member Florida and 156-member Michigan delegations. Such a decision would give Clinton an estimated 55 or more delegates than Obama, according to Clinton campaign operatives. The Obama campaign has declined to give an estimate.

Using the Rules and Bylaws Committee to force the seating of two pro-Hillary delegations would provoke a massive outcry from Obama forces. Such a strategy would, additionally, face at least two other major hurdles, and could only be attempted, according to sources in the Clinton camp, under specific circumstances:

Without the Obama supporters, Hillary has no way to win the general. That’s the same as without Clinton supporters, Obama can’t win. This is the exact reason why any decisions on Florida and Michigan must be done in such a way to cause minimal damage to the party.