undermine confidence vs undermine her confidence

Some examples from the web:

• Those practices certainly undermine confidence in the decency of government.
• Counterfeiting currency can also undermine confidence in the payment system, making the public uncertain about accepting cash for transactions.
• That was a bad move and could undermine confidence in the need for the pact and the Commission's authority.
• The existence of imperfect control mechanisms has the potential to undermine confidence in the Structural Funds system and could cast a negative light on the EU as a whole.
• Air accidents happen comparatively infrequently compared with flights, but they are still accidents that cause many deaths, create doubts in public opinion and undermine confidence in our policy and our inspections.
• We must get away from the predictable conflicts pitting North against South and producers against importers and consumers, as the conflicts in themselves undermine confidence in the instrument and, in the longer term, in EU trade policy.
• However, care must be taken to ensure that economic policy measures to stimulate demand do not undermine confidence in stability.
• Uncertainty regarding asset valuations has not only continued to undermine confidence in the banking sector, but has weakened the effect of the government support measures taken so far.

Some examples from the web:

• Easy. We just undermine her confidence.
• The disproportionate use of this key instrument for fighting cross
• border crime helps undermine confidence in it.
• It would thereby undermine confidence, raise risk premia in interest rates and damage the prospects for economic growth and job creation.
• It is precisely this process that undermines confidence every year.
• That would undermine confidence in the euro and EMU.
• Those practices certainly undermine confidence in the decency of government.
• All of this undermines confidence in politics, and that reflects badly on us.