Dear Annie: My sister, “Renee,” and I have always been close, but things changed after she had a baby last year. I was genuinely happy for her, and I’ve tried to be supportive — dropping off meals, babysitting when I can, texting to check in. But ever since the baby was born, she’s been distant and, honestly, a little cold.

She cancels plans last-minute, rarely responds to my texts, and when we do talk, she only wants to discuss the baby. I’ve invited her to lunch or coffee just the two of us, but she always says she’s too busy or tired. I get that motherhood is overwhelming, but I miss my sister. When I brought it up gently, she snapped and said I don’t understand what it’s like to be a parent, which hurt.

I don’t have kids, and I don’t plan to, but that shouldn’t make me less important in her life. I’m not sure if I should give her more space or try harder to stay close. I just don’t know how to reach her anymore.

Is this just a phase, or have we outgrown our bond? — Left Out and Let Down

Dear Left Out and Let Down: Change is the only constant in life, and your sister’s life just changed dramatically. No, your relationship will never be the same as it was before, but that doesn’t mean you’ll never be close again.

This season, for her, is all about the baby. It’s not even her fault; it’s hard-wired into our DNA thanks to evolutionary biology. But this season will end, as all seasons do, and she will eventually gain some free time back.

In the meantime, continue supporting her and building your relationship with your new niece or nephew. You will readjust to your new roles in due time and regain the closeness you once shared; it just might look a little different.

Read more Dear Annie and other advice columns.

“How Can I Forgive My Cheating Partner?” is out now! Annie Lane’s second anthology — featuring favorite columns on marriage, infidelity, communication and reconciliation — is available as a paperback and e-book. Visit Creators Publishing for more information. Send your questions for Annie Lane to [email protected].