Get away with what? I don't ever troll, but it's hard to criticize deep-rooted beliefs without being demonized as a heretic.
I understand there is a working hypothesis among fans with no particularly special knowledge, propped up by a set of presumptions, but any suggestion she doped before Dec. 2020, or more than once, is pure speculation.
Even then, it seems like a shaky hypothesis at best as oral ingestion of low doses of nandrolone is not particularly known to have any endurance performance benefit. See for example 2006 study "Effect of multiple oral doses of androgenic anabolic steroids on endurance performance and serum indices of physical stress in healthy male subjects" where they found "no effect of multiple oral doses of AAS (nandrolone and testosterone) on endurance performance or bioserum recovery markers was found".
The likely reason for that is the kidneys do a pretty good job of filtering out ingested steroids before it ever gets in your system. This is called "first pass".
It would be better to have such a study on women, but if microdosing nandrolone could work so well for so long, Houlihan's performances of 2018 and 2020 wouldn't stand out, as women worldwide would have been running these times long before Houlihan in 2018, as nandrolone has been available and used by athletes as far back as the 1960s, including by direct injection and macro-dosing.