My year 42 old mom just swallowed a peach pit/stone :L..?

What are the possible effects? What should she do? Here's a pic so you guys have an idea on the size and what I mean by a peach pit/stone; a href="http://www.google.com/imgres?imgurl=http://www.wolfswellness.com/peachseed.jpg&imgrefurl=http://www.wolfswellness.com/indexsol.html&usg=__5Qwj2FUBSmm9I2FglCsoGZLWJ4I=&h=263&w=350&sz=76&hl=en&start=0&sig2=bmU7GKZPk2k2f10BW6CtDA&zoom=1&tbnid=f8iAbIlWXlMpoM:&tbnh=154&tbnw=217&ei=ttHjTYb0KYKDhQfux-XuBw&prev=/search%3Fq%3Dpeach%2Bseed%26um%3D1%26hl%3Den%26biw%3D1024%26bih%3D655%26tbm%3Disch&um=1&itbs=1&iact=rc&dur=13&page=1&ndsp=12&ved=1t:429,r:3,s:0&tx=84&ty=104&biw=1024&bih=655." rel="nofollow"http://www.google.com/imgres?imgurl=http…/a I'm amazed how she didn't choke on it.. But maybe 'cause it wasn't so big.