She's so brave! I'm sure the designers will oblige if you ask them to tweak their designs to be legible at small sizes and in one color. Clients have asked us to redesign logos for them because they wanted hats, and their logo was "impossible" to embroider, and redesigned logos to cost $500 to put on shirts instead of $5,000.
These are not necessarily "official" entries since I really just wanted to comment here to help, but here are visual examples that may help you direct your contest. #51, 52 and 54 has a halo to represent your Angels which is less literal so it could also mean the power that the Angels give you and Allyson and those around you. Like a warm embrace from the angels themselves. The halo is wrapped around a heart representing love and life.
"THE POWER OF" is written in big letters in a strong font to show strength. "Allyson" is written in child-like handwriting to represent Allyson herself.
This handwriting effect is reflected in the halo, so the type and mark are visually integrated.
The logo may be used with the mark to the left of the type or above it. This is so it may be optimally seen in the space it is allowed. For example, on a long, wide, skinny banner you would use #51, the long, wide skinny version. If it was on a square or round button, you would use #52 the one with the heart on top. And, if you wish to separate the two in the example of a TShirt with the type on the front and the heart on the back you could do so.
It is only two colors so it won't bankrupt you to print it onto things. It is also legible at small sizes and dynamic even in just black, say, if it were to appear in a small Newspaper Ad. (#54)
I hope this helps a little, best of luck to you, and God Bless you!