Pavey finished a creditable fourth but fell to the floor after stumbling across the finish line.
Kenya's Isabella Ochichi was second in 8mins 31.42secs, while Pavey was next in 8:33.79.
Spokesman James Pavey said additional resources would be available but demand would still almost outstrip supply.
Pavey will step up to half-marathon in the Great North Run, which takes place on 1 October.
Pavey was more than happy at recording a time of 32 minutes 22 seconds in the wintry conditions.
Foster's sentiments are shared by Twell's Beijing team-mate and relative veteran of the British women's distance-running scene, Jo Pavey.
Becky Lyne, the European 800m bronze medallist and Jo Pavey (3, 000m) carry British hopes on day two in Stuttgart.
Pavey, outsprinted by Adere in the Park, held off the challenge of Kenya's Rita Jeptoo, who was third in 15:27.
Pavey and 23-three-year-old Changeywo, fourth at last weekend's World Cross-Country Championships, broke away from the field after the halfway stage.
Changeywo was seven seconds ahead of Jo Pavey in the women's event while Chebii repeated his victory of 12 months ago.
"I had the problem a few years ago at the 2002 Commonwealth Games and never thought there would be a re-occurrence, " Pavey explained.
Sharon Pavey, who has lived in the house next door for 10 years, said the family had only recently moved to the area.
Spokesman James Pavey confirmed that additional resources would be available on New Year's Eve, but still warned that demand would almost outstrip supply.
Pavey will be contesting her third major event this month following the Great North Run and last weekend's Nike Run London 10km, where she won the women's race.
"Steph is great at taking everything in her stride and she has already made a major championship (the 2008 Olympics) so things are looking very good, " added Pavey.
"I found it really tough as soon as the gun sounded, " said Pavey, who will compete in the 5, 000m at the World Championships in Helsinki later this month.
Pavey, who is second only to Radcliffe over 5, 000m in the all-time British lists, is also certain Twell can handle the "New Paula" tag and the grand expectations associated with London 2012.
"Doris was obviously in good shape given her position at the World Cross Country and it showed when she just pulled away from me on the steepest part of the course, " said Pavey.
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