My mother is hyper-aware of her heartbeat now; is that a sign of anxiety?

Namaste to Sumiti’s son/daughter. It is very common for "Internal Focus" to backfire in highly sensitive individuals. Born June 11, 1968, in Chandigarh, your mother has a "High Vata" influence. Hyper-awareness of the heartbeat is a form of "Somatic Anxiety." When she monitors her heart, her "Anxiety-Rahu" interprets a normal variation as a "Threat," which then makes the heart beat faster, creating a Feedback Loop of Panic. Detailed Solution: Yes, she should switch to an External Sound Anchor immediately. * The Strategy: Use the sound of a Fan, a Clock, or a Water Fountain. This pulls her awareness OUT of her body and into the stable world. For her age and chart, "External Concentration" is 10x safer than "Internal Breath-work." Detailed Remedies: Remedy: Listen to "Solfeggio Frequencies" (specifically 528 Hz) during meditation. This provides a "Safe Sound" for her mind to lean on. Action: Tell her to keep her eyes Slightly Open during practice. This prevents the "Internal Dive" that leads to hyper-awareness. Mantra: Chant "Om Shanti Shanti Shanti" aloud. The sound of her own voice will mask the sound of her heart.