In some couples, both women may wish to become biological mothers. These couples may take into account a wide range of factors in deciding who will attempt pregnancy, including the women's ages and overall health and the health insurance coverage of each (Renaud, 2007). Some couples may choose to seek pregnancy for both partners, either in tandem or in sequence. Infertility in one woman and not the other poses a paradox in which the infertile woman both grieves her inability to conceive and becomes a parent as a result of the successful pregnancy of her partner. For these women, the loss of the biological mother role may be particularly difficult. In addition to the loss of the experience of pregnancy, childbirth, and (often) the breastfeeding relationship-as any woman who adopts after infertility would-she may additionally suffer from envy or resentment toward her partner who does become pregnant. Unlike in a straight couple adopting after infertility, the lesbian mother in this situation is not the only mom in the house. Her role may feel nebulous and marginal. Miller (2006) wrote of her own experience with infertility followed by her partner's conception and pregnancy: