Miguel is the father of Javier and the grandfather of Ana. Lucia is married to Javier, which makes her Miguel's daughter-in-law. Lucia is also the mother of Ana as it is stated that she is married to Ana's father. 

Lucia, being the mother of Ana, holds parental authority over her and has the responsibility and power to discipline her as necessary, including grounding her for misbehavior. This is typically part of the day-to-day parenting decisions that do not necessarily require consultation between both parents for each individual circumstance. Lucia can ground Ana without consulting Javier because she has the implicit authority to make such decisions in her role as Ana's mother. However, it is often expected that both parents are involved in the decision-making process regarding significant disciplinary actions in a household, this would depend on their personal parenting agreement and family dynamics.
In a certain family, Miguel is the grandfather of Ana. Javier is the son of Miguel and is married to Lucia. Lucia is the mother of Ana. What is the relationship between Miguel and Lucia? Can Lucia ground Ana for misbehavior without consulting Javier?

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