I know there are both older men and women discerners on these forums. We pray for you daily because you have a harder time finding your “True Home.” That being said, look locally first, which includes dioceses next door to yours, and always look at the ones with whom you are most familiar. The Holy Ghost works on attraction. Even if a community says they won’t accept over age 35 – or whatever their cutoff age is – should you still have an attraction to them, they may give a hearing.
Older vocations can also be accepted as extern sisters or claustral oblates in monasteries.
LCWR communities are often more open to delayed vocations. Communities in the UK often are, as well.
Here is the link to the search engine on the Institute on Religious Life’s website:
Daughters of Divine Hope, TX:
Family of Jacopa Association, OH:
Daughters of Mary, Mother of Israel’s Hope:
Children of Mary, OH:
Nuns of Perpetual Adoration:
Anchorage, AK: https://www.archdioceseofanchorage.org/parishes/monastery-sisters-of-perpetual-adoration/
Sioux Falls, SD: http://www.perpetualadorationsisters.org/
San Francisco, CA (opens with video): http://adorejesus.org/Index.aspx (has page listing other monasteries)
Capuchin Poor Clares:
The Poor Clares of Perpetual Adoration may accept those over 35. The Hanceville, AL, house has a cutoff age of 35. Other monasteries may not.