Giving a bottle of expressed for the DF is a great idea but I'm not sure how your lo would be with her reflux? I know if my ds doesn't get a burp out then the entire feed (or what seems like the entire feed) pours out of his mouth. You can always try it to see how she does, if she spits it all up then you know it's not for her. If you decide to try to stop the df all together then again, you can always see how she does. If she wakes then she is expecting it. I know when I used to df my dd she would wake the very odd time so I always switched up the time of the feed (between 10 and 11) so it was never at the exact same time.