H is for Homeostasis

Winnie and George took the path cautiously, an overnight frost had tinged the hedgerow with white but the ground was dark and damp. She tucked her hand under his elbow and they made their way down towards the high street. Outside the butchers he waited while she shopped then they stepped out to cross to the post office. Without warning she felt her foot slide and panic rose as she lurched towards an approaching lorry. A strong hand caught her by the arm and pulled her back. She looked up to thank her rescuer and met her husband's reassuring smile.

(Linking back to the A to Z challenge)