G.B.
We kept J in a bouncy seat in his baby bed until he absolutley woulldn't sleep in it anymore. We put him down on the mattress and he rolled over and slept all night.... He had reflux and needed to be elevated. I don't see any issue for her sleeping reclining instead of laying down. If you have one why don't you use it at nap time and see how it works? Some of them have virbators built in and they work wonderful too.
Here's a link to see what types are offered on the market now.
http://www.consumerreports.org/cro/babies-kids/baby-toddl...