In Jainism, celibacy (brahmacharya) is considered a valuable spiritual practice, regardless of one's age or gender. Celibacy is one of the five major vows (mahavratas) observed by monks and nuns, and is also recommended as a discipline (as a small vow, or anuvrata) for lay followers to the extent possible in their life circumstances.

For laypersons (śrāvakas and śrāvikās), complete celibacy is not mandatory, but self-control in sexual matters is highly encouraged. Practicing celibacy, especially later in life or after fulfilling one's responsibilities (such as marriage and family), is seen as conducive to spiritual advancement. It helps reduce attachments and passions, leading to inner peace and progress on the path to liberation (moksha).

For a woman in her 30s, choosing celibacy is respected in Jainism if it aligns with her spiritual goals and personal conviction. The key is that such a decision should be made thoughtfully, with awareness of its spiritual significance and with the intention of progressing on the path of self-restraint, non-attachment, and ultimately liberation.

In summary, Jainism regards voluntary celibacy as a wise and meritorious practice when undertaken sincerely, regardless of age or gender.