The Two of Wands is a card of decisions, dilemmas, and action. It represents a balancing act, triggered by a choice and/or by taking action. The Queen of Pentacles represents a practical, down to earth person (usually female), who's focused on everyday matters, financial stability and material security. The Queen of Pentacles often represents a person of earth sign/ascendant (Virgo, Capricorn, Taurus). The combination of the Two of Wands and the Queen of Pentacles speaks about decisions related to practical matters.
To understand the elemental relationships between the cards, we should always take into account their actual meaning. The elements of the cards are Fire (Two of Wands) and Earth (Queen of Pentacles). The blending of Fire and Earth results in a neutral combination, which could be either negative or positive. However, the Two of Wands and the Queen of Pentacles is a dynamic influence and the general feel of this combination would be a positive one. The Fire of the Two of Wands energizes the Earth of the Queen of Pentacles, while the Earth offers a solid base, that can't be easily destroyed by Fire.