DS 2 has been horribly resistant to the catnap. I think he's getting to the age now where we can drop it if his other naps have been good (which they usually aren't
). I've given up trying to get him to catnap in his cribby, and I actually hold him when I know he's getting OT. Not very BW, but at least he sleeps well at night for me.
I'm not telling you to hold her, especially she does well putting herself to sleep. But every babe is different and you just need to find what works for her. The catnap time is so short, if she's doing okay otherwise, just hang in there.
PLUS, someone will probably be along soon to post something totally opposite of what I've told you, anyway, and they're probably right!!
Hope I helped, anyway!