Trev, unless you've been editing the EXIF data, both images were shot within a 15 minute period. Both seem to offer very reasonable alternative "solutions" to a bird in flight. Personally, neither image does much for me but I can certainly understand your step-daughter's liking for the first image.
I don't think I can agree with Manfred here - I'm pleased that you preserved both images. It may take disk space but you can't reproduce any image if it's deleted. So keep them all!
I've kept this! Lord knows why. But one day I might remember what it actually is!