Looking on the internet deeply has found these results:

as long as she lay still is the most popular phrase on the web.

as long as she lie still 10 results on the web	as long as she lay still 13 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
It doesn't look like this phrase is very popular! The search could not find any examples on the internet.	hour standoff. Dec 6, 2010 ... As long as she lay still in the snow she found the reindeer held back. Whenever she moved, he attacked again, leading to a two The giddiness was slight and indeterminate as long as she lay still, but was very considerable and definite when she raised her head or sat up. Objects before�... May 31, 2015 ... As long as she lay still and careful and the wind didn't blow too much, she would stay dry. Except, she was already damp from having to sit out�...

as long as she lie still

10 results on the web

as long as she lay still

13 results on the web

More popular!

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

hour standoff.
Dec 6, 2010 ... As long as she lay still in the snow she found the reindeer held back. Whenever she moved, he attacked again, leading to a two
The giddiness was slight and indeterminate as long as she lay still, but was very considerable and definite when she raised her head or sat up. Objects before�...
May 31, 2015 ... As long as she lay still and careful and the wind didn't blow too much, she would stay dry. Except, she was already damp from having to sit out�...