Our friend's daughter, Julia, has a stuffed toy like this one called her "moose". It's possible that Isabelle has the same affinity to this thing as Julia does to her moose.
I'm not sure if Keely was trying to get Isabelle to roll over or crawl? However, Isabelle is becoming more and more aware of her surroundings everyday.
Keely and I thought it was funny one night, we went in to check on her at around midnight, it seems likes she's fine doing the spread eagle thing while sleeping...