Mrs. Ramsay really wants everyone to get married – particularly women. She herself is in a marriage that at least one character holds up as an ideal. Interestingly enough, her marriage to Mr. Ramsay is actually the only real marriage we see in the novel. We do, however, "hear about" (via Lily’s memory) how the Rayley marriage, which Mrs. Ramsay had encouraged so much, worked out – it was unsuccessful.
Mrs. Ramsay is the more powerful partner in her marriage.