The phrase "awesome mother" is a complimentary expression used to describe a mother who is exceptional, impressive or outstanding in her role as a parent. Full definition
For example, Mar Monte's Teen Success program provides pregnant and / or parenting teens with the tools to cope with the stresses of parenthood, continue their education and learn to become awesome mothers. (plannedparenthood.org)
Leandra, you are going to be the most awesome mother. (manrepeller.com)